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  <title>Photons to Photos - Optics</title>
  <link>https://www.photonstophotos.net/GeneralTopics/Lenses/OpticalBench/OpticalBenchHub.htm</link>
  <description>Optical Bench and Optics Primer</description>
  <language>en-us</language>
  <copyright>Copyright 2017-2026, William J. Claff</copyright>
  <managingEditor>bclaff@comcast.net (Bill Claff)</managingEditor>
  <webMaster>bclaff@comcast.net (Bill Claff)</webMaster>
  <pubDate>31 Mar 2026 17:00:00 -0500</pubDate>
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   <title>New Lens: Olympus M.Zuiko ED 9-18mm F4.0-5.6 MFT</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20090262236_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus M.Zuiko ED 9-18mm F4.0-5.6 MFT.</description>
   <pubDate>31 Mar 2026 17:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Distagon T 35mm F2(ZX1)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180180842_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Distagon T 35mm F2(ZX1).</description>
   <pubDate>30 Mar 2026 18:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Panasonic Leica DG Summilux 15mm F1.7 Asph</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150281588_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Leica DG Summilux 15mm F1.7 Asph.</description>
   <pubDate>30 Mar 2026 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Panasonic Lumix G Vario 14-42mm F3.5-5.6 II Asph Mega OIS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150281588_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Lumix G Vario 14-42mm F3.5-5.6 II Asph Mega OIS.</description>
   <pubDate>30 Mar 2026 01:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Fujifilm Fujinon 35mm F4 Super EBC Aspherical(GFX100RF)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20250362482_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon 35mm F4 Super EBC Aspherical(GFX100RF).</description>
   <pubDate>29 Mar 2026 17:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: DZOptics Kerlee 35mm F1.2 SLR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN105807400_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>DZOptics Kerlee 35mm F1.2 SLR.</description>
   <pubDate>27 Mar 2026 00:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Cosina Voigtlander Skoparex 35mm f3.4 (Bessamatic)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002927506_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Cosina Voigtlander Skoparex 35mm f3.4 (Bessamatic).</description>
   <pubDate>18 Mar 2026 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Rockstar 10mm F8 Fisheye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN221175109_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Rockstar 10mm F8 Fisheye.</description>
   <pubDate>07 Mar 2026 01:00:00 -0500</pubDate>
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   <title>New Lens: Viltrox AF 14mm F4 Air</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN121091494_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Viltrox AF 14mm F4 Air.</description>
   <pubDate>28 Feb 2026 11:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Sonnar 35mm F2 (Sony DSC-RX1RM3)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2014-055992_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Sonnar 35mm F2 (Sony DSC-RX1RM3).</description>
   <pubDate>26 Feb 2026 22:00:00 -0500</pubDate>
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   <title>New Lens: Canon 15.1-60.4mm f2.8-5.8 [PowerShot G1X]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20130176385_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 15.1-60.4mm f2.8-5.8 [PowerShot G1X].</description>
   <pubDate>18 Feb 2026 22:00:00 -0500</pubDate>
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   <title>New Lens: Canon 8.8-220mm f2.8-5.6{PowerShot G3X]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2016-148731_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 8.8-220mm f2.8-5.6{PowerShot G3X].</description>
   <pubDate>18 Feb 2026 18:00:00 -0500</pubDate>
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   <title>New Lens: Canon 8.8-36.8mm f1.8-2.8[PowerShot G7X]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20160062096_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 8.8-36.8mm f1.8-2.8[PowerShot G7X].</description>
   <pubDate>18 Feb 2026 17:00:00 -0500</pubDate>
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   <title>New Lens: Canon 12.5-62.5mm f2.0-3.9 IS [PowerShot G1X2]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150219882_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 12.5-62.5mm f2.0-3.9 IS [PowerShot G1X2].</description>
   <pubDate>18 Feb 2026 16:00:00 -0500</pubDate>
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   <title>New Lens: Isco-Gottingen Tele-Westanar 135mm F3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/FR1218166_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Isco-Gottingen Tele-Westanar 135mm F3.5.</description>
   <pubDate>16 Feb 2026 22:00:00 -0500</pubDate>
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   <title>New Lens: AstrHori 40mm F5.6 Full Frame</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN221175107_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>AstrHori 40mm F5.6 Full Frame.</description>
   <pubDate>16 Feb 2026 00:00:00 -0500</pubDate>
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   <title>New Lens: Meike Auto Focus 0.71x Speedbooster[MK-EFTR-071XL]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN216748240_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Meike Auto Focus 0.71x Speedbooster[MK-EFTR-071XL].</description>
   <pubDate>15 Feb 2026 15:00:00 -0500</pubDate>
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   <title>New Lens: 7Artisans APS-C 50mm F0.95</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN216526483_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>7Artisans APS-C 50mm F0.95.</description>
   <pubDate>12 Feb 2026 12:30:00 -0500</pubDate>
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   <title>New Lens: 7Artisans APS-C 25mm F0.95</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN216526482_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>7Artisans APS-C 25mm F0.95.</description>
   <pubDate>12 Feb 2026 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon RF100-300mm F2.8L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20260009984_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF100-300mm F2.8L IS USM.</description>
   <pubDate>07 Feb 2026 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20260207_1200</guid>
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   <title>New Lens: Canon 15-45mm f2.8-5.6 (PowerShot G1 X Mark III)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2018-106021_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 15-45mm f2.8-5.6 (PowerShot G1 X Mark III).</description>
   <pubDate>03 Feb 2026 10:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 17-40mm F1.8 DC A</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN121454749_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 17-40mm F1.8 DC A.</description>
   <pubDate>02 Feb 2026 22:00:00 -0500</pubDate>
   <guid isPermaLink="false">20260202_2200</guid>
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   <title>New Lens: Zeiss Flexon 50mm F2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/FR1191673_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Flexon 50mm F2.</description>
   <pubDate>31 Jan 2026 22:00:00 -0500</pubDate>
   <guid isPermaLink="false">20260131_2200</guid>
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  <item>
   <title>New Lens: Projection Optics Super-Lite</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US001479251_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Projection Optics Super-Lite.</description>
   <pubDate>31 Jan 2026 16:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Zeiss Vario-Prakticar 35-70mm f2.7-3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE03602859_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Vario-Prakticar 35-70mm f2.7-3.5.</description>
   <pubDate>30 Jan 2026 15:00:00 -0500</pubDate>
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   <title>New Lens: Nikon UV-Nikkor 55mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1967-009417_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon UV-Nikkor 55mm F4.</description>
   <pubDate>29 Jan 2026 00:00:00 -0500</pubDate>
   <guid isPermaLink="false">20260129_0000</guid>
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   <title>New Lens: Olympus E.Zuiko 45mm F2.8 (Ace-E)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1950-003066_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus E.Zuiko 45mm F2.8 (Ace-E).</description>
   <pubDate>24 Jan 2026 15:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon 85mm f1.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1952-005233_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 85mm f1.5.</description>
   <pubDate>24 Jan 2026 14:00:00 -0500</pubDate>
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   <title>New Lens: Canon FL100mm F3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1954-005476_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon FL100mm F3.5.</description>
   <pubDate>24 Jan 2026 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Reflex-Nikkor 500mm f/5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1964-018719_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Reflex-Nikkor 500mm f/5.</description>
   <pubDate>24 Jan 2026 00:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Konica Minolta Hexanon AR 135mm F3.5 (1955)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1955-009472_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta Hexanon AR 135mm F3.5 (1955).</description>
   <pubDate>23 Jan 2026 20:00:00 -0500</pubDate>
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  </item>

  <item>
   <title>New Lens: Venus Laowa 8-15mm f2.8 FF Zoom Fisheye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN119805722_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Venus Laowa 8-15mm f2.8 FF Zoom Fisheye.</description>
   <pubDate>20 Jan 2026 01:00:00 -0500</pubDate>
   <guid isPermaLink="false">20260120_0100</guid>
  </item>

  <item>
   <title>New Lens: Venus Laowa MSC</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180164584_ExampleRCL1P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Venus Laowa MSC.</description>
   <pubDate>18 Jan 2026 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20260118_1200</guid>
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  <item>
   <title>New Lens: Fujifilm Fujinar 210mm f4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1954-002685_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinar 210mm f4.5.</description>
   <pubDate>16 Jan 2026 17:30:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon FL200mm F3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1952-005234_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon FL200mm F3.5.</description>
   <pubDate>16 Jan 2026 17:01:00 -0500</pubDate>
   <guid isPermaLink="false">20260116_1701</guid>
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   <title>New Lens: Zeiss Biometar 80mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002968221_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Biometar 80mm f2.8.</description>
   <pubDate>14 Jan 2026 17:01:00 -0500</pubDate>
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   <title>New Lens: Zeiss Biometar 120mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002968221_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Biometar 120mm f2.8.</description>
   <pubDate>14 Jan 2026 17:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Leica Super-Angulon-R 21mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN119148346_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Super-Angulon-R 21mm F4.</description>
   <pubDate>13 Jan 2026 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: SongRaw 50mm F1.2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN120491279_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>SongRaw 50mm F1.2.</description>
   <pubDate>13 Jan 2026 00:30:00 -0500</pubDate>
   <guid isPermaLink="false">20260113_0031</guid>
  </item>

  <item>
   <title>New Lens: Zeiss Apo-Germinar 375mm F9</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB0993360_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Apo-Germinar 375mm F9.</description>
   <pubDate>13 Jan 2026 00:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Tele-Tessar 120mm F6.3</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE00347838_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Tele-Tessar 120mm F6.3.</description>
   <pubDate>12 Jan 2026 22:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Goerz Dagor Anastigmat 240mm F6.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE00074437_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Goerz Dagor Anastigmat 240mm F6.8.</description>
   <pubDate>12 Jan 2026 16:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Kodak Ektar 100mm F4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002279384_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Kodak Ektar 100mm F4.5.</description>
   <pubDate>11 Jan 2026 21:00:00 -0500</pubDate>
   <guid isPermaLink="false">20260111_2100</guid>
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  <item>
   <title>New Lens: Cosina Voigtlander Dynar 100mm F6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US000765006_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Cosina Voigtlander Dynar 100mm F6.</description>
   <pubDate>11 Jan 2026 15:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Cosina Viogtlander 100mm F4.5 Heliar</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB190213441_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Cosina Viogtlander 100mm F4.5 Heliar.</description>
   <pubDate>11 Jan 2026 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Meyer Optik Gorlitz 135mm F4.5 Double Plasmat</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB0135853_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Meyer Optik Gorlitz 135mm F4.5 Double Plasmat.</description>
   <pubDate>11 Jan 2026 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20260111_1300</guid>
  </item>

  <item>
   <title>New Lens: Meyer Optik Gorlitz 100mm F2 Kino Plasmat</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE00401630_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Meyer Optik Gorlitz 100mm F2 Kino Plasmat.</description>
   <pubDate>10 Jan 2026 18:00:00 -0500</pubDate>
   <guid isPermaLink="false">20260110_1801</guid>
  </item>

  <item>
   <title>New Lens: Sony FE 28-70mm F2 GM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2025-263124_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE 28-70mm F2 GM.</description>
   <pubDate>01 Jan 2026 11:00:00 -0500</pubDate>
   <guid isPermaLink="false">20260101_1100</guid>
  </item>

  <item>
   <title>New Lens: Canon RF20mm F1.4L VCM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20250389929_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF20mm F1.4L VCM.</description>
   <pubDate>26 Dec 2025 00:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251226_0000</guid>
  </item>

  <item>
   <title>New Lens: Vivitar 28mm f2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004258980_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Vivitar 28mm f2.</description>
   <pubDate>07 Dec 2025 22:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251207_2200</guid>
  </item>

  <item>
   <title>New Lens: Mamiya-Sekor Zoom E 28-50mm f3.5-4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1981-119109_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Mamiya-Sekor Zoom E 28-50mm f3.5-4.5.</description>
   <pubDate>07 Dec 2025 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251207_1300</guid>
  </item>

  <item>
   <title>New Lens: Sony FE 85 mm F1.4 GM II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2025-239028_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE 85 mm F1.4 GM II.</description>
   <pubDate>20 Nov 2025 23:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251120_2300</guid>
  </item>

  <item>
   <title>New Lens: Olympus Zuiko Auto-Macro 20mm F2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004431274_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus Zuiko Auto-Macro 20mm F2.</description>
   <pubDate>16 Nov 2025 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251116_1300</guid>
  </item>

  <item>
   <title>New Lens: Agfa Color-Magnolar II 100mm F4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB0775944_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Agfa Color-Magnolar II 100mm F4.5.</description>
   <pubDate>14 Nov 2025 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251114_1400</guid>
  </item>

  <item>
   <title>New Lens: Konica Minolta 100mm F2 Auto Tele Rokkor</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1963-011590_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta 100mm F2 Auto Tele Rokkor.</description>
   <pubDate>30 Oct 2025 20:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251030_2000</guid>
  </item>

  <item>
   <title>New Lens: Nikon Nikkor 50mm f/1.4S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1967-018597_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor 50mm f/1.4S.</description>
   <pubDate>30 Oct 2025 18:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251030_1800</guid>
  </item>

  <item>
   <title>New Lens: Schneider Technika Super Angulon 8 / 75</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1967-023896_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Technika Super Angulon 8 / 75.</description>
   <pubDate>30 Oct 2025 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251030_1400</guid>
  </item>

  <item>
   <title>New Lens: Yashica Yashinon-DX 21mm F3.3</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1969-024068_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Yashica Yashinon-DX 21mm F3.3.</description>
   <pubDate>28 Oct 2025 22:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251028_2200</guid>
  </item>

  <item>
   <title>New Lens: Zeiss Biogon 35mm F2.8 Contax Opton</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1955-004837_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Biogon 35mm F2.8 Contax Opton.</description>
   <pubDate>27 Oct 2025 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251027_1300</guid>
  </item>

  <item>
   <title>New Lens: Vivitar Series 1 200mm f/3</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003942876_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Vivitar Series 1 200mm f/3.</description>
   <pubDate>22 Oct 2025 10:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251022_1000</guid>
  </item>

  <item>
   <title>New Lens: Ricoh SMC Pentax 645 FA 120mm f4.0 Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006154324_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh SMC Pentax 645 FA 120mm f4.0 Macro.</description>
   <pubDate>14 Oct 2025 11:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251014_1100</guid>
  </item>

  <item>
   <title>New Lens: Yongnuo YN50mm F1.8 RF</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN223389969_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Yongnuo YN50mm F1.8 RF.</description>
   <pubDate>12 Oct 2025 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251012_1400</guid>
  </item>

  <item>
   <title>New Lens: Canon New FD28mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004176914_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon New FD28mm f2.8.</description>
   <pubDate>04 Oct 2025 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251004_1600</guid>
  </item>

  <item>
   <title>New Lens: Konica Minolta 28mm F3.5 MC W Rokkor v2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1969-025743_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta 28mm F3.5 MC W Rokkor v2.</description>
   <pubDate>04 Oct 2025 01:00:00 -0500</pubDate>
   <guid isPermaLink="false">20251004_0100</guid>
  </item>

  <item>
   <title>New Lens: Nikon AF-I Nikkor 300mm f/2.8D ED-IF</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005323270_Example08P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-I Nikkor 300mm f/2.8D ED-IF.</description>
   <pubDate>29 Sep 2025 21:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250929_2100</guid>
  </item>

  <item>
   <title>New Lens: Nikon AF-S Nikkor 600mm f/4D IF-ED II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005745306_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 600mm f/4D IF-ED II.</description>
   <pubDate>27 Sep 2025 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250927_1400</guid>
  </item>

  <item>
   <title>New Lens: Nikon AF-S Nikkor 500mm f/4D IF-ED II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005745306_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 500mm f/4D IF-ED II.</description>
   <pubDate>27 Sep 2025 13:59:00 -0500</pubDate>
   <guid isPermaLink="false">20250927_1359</guid>
  </item>

  <item>
   <title>New Lens: Nikon AF-S Nikkor 300mm f/2.8D IF-ED II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005745306_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 300mm f/2.8D IF-ED II.</description>
   <pubDate>27 Sep 2025 13:58:00 -0500</pubDate>
   <guid isPermaLink="false">20250927_1358</guid>
  </item>

  <item>
   <title>New Lens: Nikon AF-I Nikkor 600mm f/4D IF-ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1992-238311_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-I Nikkor 600mm f/4D IF-ED.</description>
   <pubDate>27 Sep 2025 01:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250927_0100</guid>
  </item>

  <item>
   <title>New Lens: Canon Extender FD 2X-A</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004129359_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon Extender FD 2X-A.</description>
   <pubDate>25 Sep 2025 17:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250925_1700</guid>
  </item>

  <item>
   <title>New Lens: Canon New FD 400mm f2.8L</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1986-014492_ExampleMLP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon New FD 400mm f2.8L.</description>
   <pubDate>25 Sep 2025 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250925_1200</guid>
  </item>

  <item>
   <title>New Lens: Canon Extender FD 1.4X-A</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1986-014492_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon Extender FD 1.4X-A.</description>
   <pubDate>25 Sep 2025 11:59:00 -0500</pubDate>
   <guid isPermaLink="false">20250925_1159</guid>
  </item>

  <item>
   <title>New Lens: Canon Extender FD 2X-B</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004340279_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon Extender FD 2X-B.</description>
   <pubDate>24 Sep 2025 23:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250924_2300</guid>
  </item>

  <item>
   <title>New Lens: Zeiss Tele-Tessar 200mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01447294_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Tele-Tessar 200mm F4.</description>
   <pubDate>22 Sep 2025 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250922_1400</guid>
  </item>

  <item>
   <title>New Lens: Nikon Nikkor-S Auto 58mm f/1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1966-017177_Example01_Tale40.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor-S Auto 58mm f/1.4.</description>
   <pubDate>01 Sep 2025 10:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250901_1000</guid>
  </item>

  <item>
   <title>New Lens:Konica Minolta FL-Hexanon AR 300mm F6.3</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1974-023892_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta FL-Hexanon AR 300mm F6.3.</description>
   <pubDate>19 Aug 2025 21:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250819_2100</guid>
  </item>

  <item>
   <title>New Lens: Canon FL300mm f5.6 Fluorite</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1972-008749_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon FL300mm f5.6 Fluorite.</description>
   <pubDate>15 Aug 2025 13:01:00 -0500</pubDate>
   <guid isPermaLink="false">20250815_1301</guid>
  </item>

  <item>
   <title>New Lens: Canon FL500mm f5.6 Fluorite</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1972-008109_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon FL500mm f5.6 Fluorite.</description>
   <pubDate>15 Aug 2025 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250815_1300</guid>
  </item>

  <item>
   <title>New Lens: Canon FD300mm f5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1972-008749_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon FD300mm f5.6.</description>
   <pubDate>15 Aug 2025 11:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250815_1100</guid>
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  <item>
   <title>New Lens: Ricoh 18.3mm F2.8 (GR IV)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2025-069516_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh 18.3mm F2.8 (GR IV).</description>
   <pubDate>07 Aug 2025 20:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250807_2000</guid>
  </item>

  <item>
   <title>New Lens: Canon RF50mm F1.4L VCM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20250251576_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF50mm F1.4L VCM.</description>
   <pubDate>07 Aug 2025 17:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250807_1700</guid>
  </item>

  <item>
   <title>New Lens: Sigma 28-45mm F1.8 DG DN A</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN120386081_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 28-45mm F1.8 DG DN A.</description>
   <pubDate>29 Jul 2025 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250729_1500</guid>
  </item>

  <item>
   <title>New Lens: Canon 50mm f1.2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1978-131034_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 50mm f1.2.</description>
   <pubDate>25 Jul 2025 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250725_1400</guid>
  </item>

  <item>
   <title>New Lens: Enna Munchen Ultra-Lithagon 28mm F3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002959100_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Enna Munchen Ultra-Lithagon 28mm F3.5.</description>
   <pubDate>24 Jul 2025 18:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250724_1800</guid>
  </item>

  <item>
   <title>New Lens:Enna Munchen Tele-Ennalyt 135mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002907248_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Enna Munchen Tele-Ennalyt 135mm F2.8.</description>
   <pubDate>24 Jul 2025 18:01:00 -0500</pubDate>
   <guid isPermaLink="false">20250724_1801</guid>
  </item>

  <item>
   <title>New Lens:Enna Munchen Lithagon 35mm F3.5 C</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002821112_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Enna Munchen Lithagon 35mm F3.5 C.</description>
   <pubDate>24 Jul 2025 18:02:00 -0500</pubDate>
   <guid isPermaLink="false">20250724_1802</guid>
  </item>

  <item>
   <title>New Lens:Enna Munchen Lithagon 24mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01228820_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Enna Munchen Lithagon 24mm F4.</description>
   <pubDate>24 Jul 2025 18:03:00 -0500</pubDate>
   <guid isPermaLink="false">20250724_1803</guid>
  </item>

  <item>
   <title>New Lens: Nikon TV-Nikkor 11.5-69mm f/1.2(Nikon S-100)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004437733_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon TV-Nikkor 11.5-69mm f/1.2(Nikon S-100).</description>
   <pubDate>19 Jul 2025 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250719_1600</guid>
  </item>

  <item>
   <title>New Lens: Fujifilm Fujinon XF16-55mm F2.8 R LM WR II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20250234079_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF16-55mm F2.8 R LM WR II.</description>
   <pubDate>17 Jul 2025 20:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250717_2000</guid>
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  <item>
   <title>New Lens: Samyang AF 35-150mm F2-2.8 L</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20250231383_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samyang AF 35-150mm F2-2.8 L.</description>
   <pubDate>17 Jul 2025 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250717_1600</guid>
  </item>

  <item>
   <title>New Lens: Olympus Zuiko Auto-S 55mm f1.2 G</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003743387_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus Zuiko Auto-S 55mm f1.2 G.</description>
   <pubDate>02 Jul 2025 01:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250702_0100</guid>
  </item>

  <item>
   <title>New Lens: Nikon 28mm f/3.5 Macro(AF600QD)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1994-235857_Example02_Tale94.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon 28mm f/3.5 Macro(AF600QD).</description>
   <pubDate>30 Jun 2025 20:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250630_2000</guid>
  </item>

  <item>
   <title>New Lens: Fujifilm Fujinon 60mm F4 Super EBC (GS645S Professional)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005548447_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon 60mm F4 Super EBC (GS645S Professional).</description>
   <pubDate>21 Jun 2025 21:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250621_2100</guid>
  </item>

  <item>
   <title>New Lens: Canon New FD50mm f1.2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004364643_Example03P.txt.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon New FD50mm f1.2.</description>
   <pubDate>16 Jun 2025 20:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250616_2000</guid>
  </item>

  <item>
   <title>New Lens: Canon RF-S7.8mm F4 STM Dual Fisheye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20250093761_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF-S7.8mm F4 STM Dual Fisheye.</description>
   <pubDate>09 Jun 2025 20:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250609_2000</guid>
  </item>

  <item>
   <title>New Lens: Arri Zeiss Master Prime T1.3 50mm</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE102005025204_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Arri Zeiss Master Prime T1.3 50mm.</description>
   <pubDate>28 May 2025 02:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250528_0200</guid>
  </item>

  <item>
   <title>New Lens: Canon RF70-200mm F2.8 L IS USM Z</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20250155694_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF70-200mm F2.8 L IS USM Z.</description>
   <pubDate>15 May 2025 19:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250515_1900</guid>
  </item>

  <item>
   <title>New Lens: Vivitar Series 1 70-210mm f2.8-4 Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004758073_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Vivitar Series 1 70-210mm f2.8-4 Macro.</description>
   <pubDate>02 May 2025 00:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250502_0000</guid>
  </item>

  <item>
   <title>New Lens: Konica Minolta AF 400mm F4.5 HS APO G</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1996-327896_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 400mm F4.5 HS APO G.</description>
   <pubDate>26 Apr 2025 22:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250426_2200</guid>
  </item>

  <item>
   <title>New Lens: Cosina Nokton 50mm F1.2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2025-058577_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Cosina Nokton 50mm F1.2.</description>
   <pubDate>10 Apr 2025 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250410_1600</guid>
  </item>

  <item>
   <title>New Lens: Nikon Nikkor-O 2.1cm f/4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1968-030782_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor-O 2.1cm f/4.</description>
   <pubDate>09 Apr 2025 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250409_1500</guid>
  </item>

  <item>
   <title>New Lens: Nikon Nikkor Z 35mm f/1.2 S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2025-052870_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z 35mm f/1.2 S.</description>
   <pubDate>07 Apr 2025 09:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250407_0900</guid>
  </item>

  <item>
   <title>New Lens: Canon RF-S14-30mm F4-6.3 IS STM PZ</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2025-050505_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF-S14-30mm F4-6.3 IS STM PZ.</description>
   <pubDate>06 May 2025 00:01:00 -0500</pubDate>
   <guid isPermaLink="false">20250406_0001</guid>
  </item>

  <item>
   <title>New Lens: Nikon AF-S Teleconverter TC-20E III Aspherical</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2010-191211_Example02TCP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Teleconverter TC-20E III Aspherical.</description>
   <pubDate>06 May 2025 00:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250406_0000</guid>
  </item>

  <item>
   <title>New Lens: Sigma 70-200mm F2.8 DG DN OS S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20250093627_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 70-200mm F2.8 DG DN OS S.</description>
   <pubDate>20 Mar 2025 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250320_1600</guid>
  </item>

  <item>
   <title>New Lens: Fujifilm Fujinon GF500mm F5.6 R LM OIS WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2025-013477_Example07P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon GF500mm F5.6 R LM OIS WR.</description>
   <pubDate>18 Jan 2025 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250118_1300</guid>
  </item>

  <item>
   <title>New Lens: Konica Minolta Hexar 35mm F2.0</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1993-164061_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta Hexar 35mm F2.0.</description>
   <pubDate>15 Jan 2025 22:00:00 -0500</pubDate>
   <guid isPermaLink="false">20250115_2200</guid>
  </item>

  <item>
   <title>New Lens: Canon RF28-70mm F2.8 IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20240329367_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF28-70mm F2.8 IS STM.</description>
   <pubDate>15 Oct 2024 00:00:00 -0500</pubDate>
   <guid isPermaLink="false">20241015_0000</guid>
  </item>

  <item>
   <title>New Lens: Fujifilm Fujinon GF30mm F5.6 T and S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2024-195273_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon GF30mm F5.6 T and S.</description>
   <pubDate>30 Sep 2024 00:30:00 -0500</pubDate>
   <guid isPermaLink="false">20240930_0030</guid>
  </item>

  <item>
   <title>New Lens: Tamron 50-300mm F4.5-6.3 Di III VC VXD</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20240241349_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron 50-300mm F4.5-6.3 Di III VC VXD.</description>
   <pubDate>26 Sep 2024 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240926_1600</guid>
  </item>

  <item>
   <title>New Lens: Leica APO-Summicron 43mm F2.0 Asph (Q3 43)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2024-104911_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica APO-Summicron 43mm F2.0 Asph (Q3 43).</description>
   <pubDate>16 Sep 2024 19:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240916_1900</guid>
  </item>

  <item>
   <title>New Lens: Sigma 10-18mm F2.8 DC DN C</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2024-104911_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 10-18mm F2.8 DC DN C.</description>
   <pubDate>14 Aug 2024 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240814_1300</guid>
  </item>

  <item>
   <title>New Lens: Canon RF-S3.9mm F3.5 STM Dual Fisheye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20240241345_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF-S3.9mm F3.5 STM Dual Fisheye.</description>
   <pubDate>21 Jul 2024 22:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240721_2200</guid>
  </item>

  <item>
   <title>New Lens: Nikon Nikkor Z 135mm F1.8 S Plena</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2024-147268_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z 135mm F1.8 S Plena.</description>
   <pubDate>11 Jul 2024 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240711_1300</guid>
  </item>

  <item>
   <title>New Lens: Nikon AF-S Zoom-Nikkor 17-35mm f/2.8D IF-ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2001-083421_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Zoom-Nikkor 17-35mm f/2.8D IF-ED.</description>
   <pubDate>02 Jul 2024 18:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240702_1800</guid>
  </item>

  <item>
   <title>New Lens: Sony FE 16-35mm F2.8 GM II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2024-135126_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE 16-35mm F2.8 GM II.</description>
   <pubDate>02 Jul 2024 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240702_1300</guid>
  </item>

  <item>
   <title>New Lens: Yongnuo YN56mm F1.4Z DA DSM WL Pro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN220171327_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Yongnuo YN56mm F1.4Z DA DSM WL Pro.</description>
   <pubDate>17 Jun 2024 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240617_1500</guid>
  </item>

  <item>
   <title>New Lens: Canon RF24-105mm F2.8 L IS USM Z</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20240192474_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF24-105mm F2.8 L IS USM Z.</description>
   <pubDate>17 Jun 2024 09:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240617_0900</guid>
  </item>

  <item>
   <title>New Lens: Zeiss Biotar 50mm F1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US001786916_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Biotar 50mm F1.4.</description>
   <pubDate>14 Jun 2024 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240614_1401</guid>
  </item>

  <item>
   <title>New Lens: Panasonic Lumix S 14-28mm F4-5.6 Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20240192475_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Lumix S 14-28mm F4-5.6 Macro.</description>
   <pubDate>14 Jun 2024 02:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240614_0200</guid>
  </item>

  <item>
   <title>New Lens: Olympus OM M. Zuiko Digital ED 90mm F3.5 Macro IS Pro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2024-066164_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus OM M. Zuiko Digital ED 90mm F3.5 Macro IS Pro.</description>
   <pubDate>22 May 2024 23:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240522_2300</guid>
  </item>

  <item>
   <title>New Lens: Nikon AI Nikkor 105mm f/1.8S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1984-121015_Example04_Tale59.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI Nikkor 105mm f/1.8S.</description>
   <pubDate>19 May 2024 19:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240519_1900</guid>
  </item>

  <item>
   <title>New Lens: Fujifilm Fujinon XF16-50mm F2.8-4.8 R LM WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2024-057734_Example17P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF16-50mm F2.8-4.8 R LM WR.</description>
   <pubDate>17 May 2024 20:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240517_2000</guid>
  </item>

  <item>
   <title>New Lens: Samyang AF 24mm F1.8 FE</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20240151940_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samyang AF 24mm F1.8 FE.</description>
   <pubDate>12 May 2024 00:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240512_0000</guid>
  </item>

  <item>
   <title>New Lens: Sigma 17mm F4.0 DG DN C</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2024-062005_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 17mm F4.0 DG DN C.</description>
   <pubDate>11 May 2024 22:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240511_2200</guid>
  </item>

  <item>
   <title>New Lens: Zeiss Rollei-Mutar 1.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01180158_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Rollei-Mutar 1.5.</description>
   <pubDate>08 May 2024 21:01:00 -0500</pubDate>
   <guid isPermaLink="false">20240508_2101</guid>
  </item>

  <item>
   <title>New Lens: Zeiss Rollei-Mutar 0.7</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01180159_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Rollei-Mutar 0.7.</description>
   <pubDate>08 May 2024 21:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240508_2100</guid>
  </item>

  <item>
   <title>New Lens: Leica Summilux C 100mm T1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008508864_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Summilux C 100mm T1.4.</description>
   <pubDate>03 May 2024 23:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240503_2300</guid>
  </item>

  <item>
   <title>New Lens: Arriflex Distagon 35mm f1.2 T1.3</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004089591_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Arriflex Distagon 35mm f1.2 T1.3.</description>
   <pubDate>30 Apr 2024 08:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240430_0800</guid>
  </item>

  <item>
   <title>New Lens: Yongnuo YN33mm F1.4Z DA DSM WL Pro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN220137479_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Yongnuo YN33mm F1.4Z DA DSM WL Pro.</description>
   <pubDate>28 Apr 2024 20:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240428_2000</guid>
  </item>

  <item>
   <title>New Lens: Canon RF200-800mm F6.3-9 IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20240134166_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF200-800mm F6.3-9 IS USM.</description>
   <pubDate>28 Apr 2024 10:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240428_1000</guid>
  </item>

  <item>
   <title>New Lens: Zeiss Vario-Sonnar 7.5-30mm F1.9</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB0933844_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Vario-Sonnar 7.5-30mm F1.9.</description>
   <pubDate>07 Apr 2024 00:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240407_0000</guid>
  </item>

  <item>
   <title>New Lens: Zeiss Tessar 50mm F3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CH314381_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Tessar 50mm F3.5.</description>
   <pubDate>06 Apr 2024 21:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240406_2100</guid>
  </item>

  <item>
   <title>New Lens: Canon RF10-20mm F4 L IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20240045184_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF10-20mm F4 L IS STM.</description>
   <pubDate>20 Mar 2024 20:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240320_2000</guid>
  </item>

  <item>
   <title>New Lens: Sigma 23mm F1.4 DC DN C</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2024-035865_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 23mm F1.4 DC DN C.</description>
   <pubDate>19 Mar 2024 00:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240319_0000</guid>
  </item>

  <item>
   <title>New Lens: Nikon Nikkor Z DX 12-28mm f/3.5-5.6 PZ VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2024-053269_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z DX 12-28mm f/3.5-5.6 PZ VR.</description>
   <pubDate>17 Mar 2024 23:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240317_2300</guid>
  </item>

  <item>
   <title>New Lens: Canon RF-S10-18mm F4.5-6.3 IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2024-007656_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF-S10-18mm F4.5-6.3 IS STM.</description>
   <pubDate>20 Jan 2024 19:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240120_1900</guid>
  </item>

  <item>
   <title>New Lens: Yongnuo YN11mm F1.8 DA DSM WL</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN219085216_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Yongnuo YN11mm F1.8 DA DSM WL.</description>
   <pubDate>08 Jan 2024 21:30:00 -0500</pubDate>
   <guid isPermaLink="false">20240108_2130</guid>
  </item>

  <item>
   <title>New Lens: Sigma 50mm F1.4 DG DN A</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2023-183894_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 50mm F1.4 DG DN A.</description>
   <pubDate>02 Jan 2024 17:00:00 -0500</pubDate>
   <guid isPermaLink="false">20240102_1700</guid>
  </item>

  <item>
   <title>New Lens: Viltrox AF 27mm f1.2 XF</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN115840281_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Viltrox AF 27mm f1.2 XF.</description>
   <pubDate>25 Dec 2023 19:00:00 -0500</pubDate>
   <guid isPermaLink="false">20231225_1900</guid>
  </item>

  <item>
   <title>New Lens: Sigma 60-600mm F4.5-6.3 DG DN OS S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2023-180574_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 60-600mm F4.5-6.3 DG DN OS S.</description>
   <pubDate>23 Dec 2023 17:00:00 -0500</pubDate>
   <guid isPermaLink="false">20231223_1700</guid>
  </item>

  <item>
   <title>New Lens: Tamron 18-200mm F/3.5-6.3 Di III VC</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2012-181525_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron 18-200mm F/3.5-6.3 Di III VC.</description>
   <pubDate>16 Dec 2023 21:00:00 -0500</pubDate>
   <guid isPermaLink="false">20231216_2100</guid>
  </item>

  <item>
   <title>New Lens: Zeiss Ultra Prime Sonnar T 135mm T1.9</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20170307860_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Ultra Prime Sonnar T 135mm T1.9.</description>
   <pubDate>10 Dec 2023 21:00:00 -0500</pubDate>
   <guid isPermaLink="false">20231210_2100</guid>
  </item>

  <item>
   <title>New Lens: Zeiss DigiPrime T1.6 7mm</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20030189767_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss DigiPrime T1.6 7mm.</description>
   <pubDate>10 Dec 2023 17:00:00 -0500</pubDate>
   <guid isPermaLink="false">20231210_1700</guid>
  </item>

  <item>
   <title>New Lens: Zhong Yi Creator 28mm F5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN218886280_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zhong Yi Creator 28mm F5.6.</description>
   <pubDate>21 Nov 2023 21:00:00 -0500</pubDate>
   <guid isPermaLink="false">20231121_2100</guid>
  </item>

  <item>
   <title>New Lens: Panasonic Leica DG Summilux 9mm F1.7 Asph</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20230367186_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Leica DG Summilux 9mm F1.7 Asph.</description>
   <pubDate>18 Nov 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20231118_1200</guid>
  </item>

  <item>
   <title>New Lens: Fujifilm Fujinon GF55mm F1.7 R WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20230341664_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon GF55mm F1.7 R WR.</description>
   <pubDate>29 Oct 2023 23:00:00 -0500</pubDate>
   <guid isPermaLink="false">20231029_2300</guid>
  </item>

  <item>
   <title>New Lens: Canon RF24-70mm F2.8 L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20190278068_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF24-70mm F2.8 L IS USM (better match).</description>
   <pubDate>08 Oct 2023 20:00:00 -0500</pubDate>
   <guid isPermaLink="false">20231008_2000</guid>
  </item>

  <item>
   <title>New Lens: Nikon Nikkor Z 26mm F/2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2023-190222_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z 26mm F/2.8.</description>
   <pubDate>05 Oct 2023 20:00:00 -0500</pubDate>
   <guid isPermaLink="false">20231005_2000</guid>
  </item>

  <item>
   <title>New Lens: Sony FE 24-70mm F2.8 GM II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2023-181666_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE 24-70mm F2.8 GM II.</description>
   <pubDate>30 Sep 2023 23:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230930_2300</guid>
  </item>

  <item>
   <title>New Lens: Venus Laowa 58mm f2.8 2x Ultra-Macro APO</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN116520542_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Venus Laowa 58mm f2.8 2x Ultra-Macro APO.</description>
   <pubDate>06 Sep 2023 22:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230906_2200</guid>
  </item>

  <item>
   <title>New Lens: Canon RF-S 55-210mm F5.0-7.1 IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE102023104719_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF-S 55-210mm F5.0-7.1 IS STM.</description>
   <pubDate>01 Sep 2023 18:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230901_1800</guid>
  </item>

  <item>
   <title>New Lens: Sony FE 20-70mm F4.0 G</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2023-153076_Example08P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE 20-70mm F4.0 G.</description>
   <pubDate>19 Aug 2023 19:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230819_1900</guid>
  </item>

  <item>
   <title>New Lens: Fujifilm Fujinon XF30mm F2.8 R LM WR Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN116500768_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF30mm F2.8 R LM WR Macro.</description>
   <pubDate>31 Jul 2023 23:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230731_2300</guid>
  </item>

  <item>
   <title>New Lens: Canon RF800mm F5.6 L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/EP4215968_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF800mm F5.6 L IS USM.</description>
   <pubDate>27 Jul 2023 22:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230727_2200</guid>
  </item>

  <item>
   <title>New Lens: Canon RF135mm F1.8L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20230213745_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF135mm F1.8L IS USM.</description>
   <pubDate>07 Jul 2023 21:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230707_2100</guid>
  </item>

  <item>
   <title>New Lens: Canon RF24-50mm F4.5-6.3 IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20230213739_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF24-50mm F4.5-6.3 IS STM.</description>
   <pubDate>07 Jul 2023 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230707_1400</guid>
  </item>

  <item>
   <title>New Lens: Sigma 24mm F1.4 DG DN A</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2023-074094_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 24mm F1.4 DG DN A.</description>
   <pubDate>29 May 2023 17:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230529_1700</guid>
  </item>

  <item>
   <title>New Lens: Canon New FD800mm f5.6L</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1980-100519_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon New FD800mm f5.6L.</description>
   <pubDate>25 May 2023 11:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230525_1100</guid>
  </item>

  <item>
   <title>New Lens: Fujifilm Fujinon XF8mm F3.5 R WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20190302431_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF8mm F3.5 R WR.</description>
   <pubDate>24 May 2023 17:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230524_1701</guid>
  </item>

  <item>
   <title>New Lens: Cosina Voigtlander Nokton 50mm F1.0 Aspherical</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2023-063766_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Cosina Voigtlander Nokton 50mm F1.0 Aspherical.</description>
   <pubDate>11 May 2023 19:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230511_1900</guid>
  </item>

  <item>
   <title>New Lens: Leica Elmarit 28mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003591257_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Elmarit 28mm f2.8.</description>
   <pubDate>10 May 2023 23:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230510_2300</guid>
  </item>

  <item>
   <title>New Lens: Canon RF15-30mm F4.5-6.3 IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/EP4174551_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF15-30mm F4.5-6.3 IS STM.</description>
   <pubDate>03 May 2023 23:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230503_2300</guid>
  </item>

  <item>
   <title>New Lens: Isco Westrogon 24mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CH352160_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Isco Westrogon 24mm F4.</description>
   <pubDate>02 May 2023 01:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230502_0100</guid>
  </item>

  <item>
   <title>New Lens: Isco 135mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB0870189_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Isco 135mm F2.8.</description>
   <pubDate>01 May 2023 21:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230501_2100</guid>
  </item>

  <item>
   <title>New Lens: Sony FE PZ 16-35mm F4 G</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2023-044106_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE PZ 16-35mm F4 G.</description>
   <pubDate>07 Apr 2023 11:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230407_1100</guid>
  </item>

  <item>
   <title>New Lens: Sony FE 70-200mm F2.8 GM OSS II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2023-039817_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE 70-200mm F2.8 GM OSS II.</description>
   <pubDate>22 Mar 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230322_1200</guid>
  </item>
  <item>
   <title>New Lens: Zeiss Pancolar 50mm F2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB0850117_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Pancolar 50mm F2.</description>
   <pubDate>15 Mar 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230315_1200</guid>
  </item>
  <item>
   <title>New Lens: Leica Colorplan 90mm F2.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003076383_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Colorplan 90mm F2.5.</description>
   <pubDate>14 Mar 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230314_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF18-120mm F4.0 LM PZ WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2023-033114_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF18-120mm F4.0 LM PZ WR.</description>
   <pubDate>13 Mar 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230313_1200</guid>
  </item>
  <item>
   <title>New Lens: Zeiss Planar 80mm f2.8 (Graflex XL)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002799207_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Planar 80mm f2.8 (Graflex XL).</description>
   <pubDate>11 Mar 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230311_1200</guid>
  </item>
  <item>
   <title>New Lens: Olympus M.Zuiko Digital ED 20mm F1.4 Pro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2023-032222_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus M.Zuiko Digital ED 20mm F1.4 Pro.</description>
   <pubDate>09 Mar 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230309_1200</guid>
  </item>
  <item>
   <title>New Lens: Meyer Optik Gorlitz 500mm F5.6 Orestegor</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01980417_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Meyer Optik Gorlitz 500mm F5.6 Orestegor.</description>
   <pubDate>02 Mar 2023 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230302_1500</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF56mm F1.2 R WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2023-029039_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF56mm F1.2 R WR.</description>
   <pubDate>02 Mar 2023 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230302_1400</guid>
  </item>
  <item>
   <title>New Lens: Meyer Optik Gorlitz 35mm F4.5 Primagon</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01749770_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Meyer Optik Gorlitz 35mm F4.5 Primagon.</description>
   <pubDate>02 Mar 2023 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230302_1300</guid>
  </item>
  <item>
   <title>New Lens: Meyer Optik Gorlitz 30mm F3.5 Lydith</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01794971_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Meyer Optik Gorlitz 30mm F3.5 Lydith.</description>
   <pubDate>02 Mar 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230302_1200</guid>
  </item>
  <item>
   <title>New Lens: Rodenstock Rodagon-WA 80mm F4.0</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE02818435_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Rodenstock Rodagon-WA 80mm F4.0.</description>
   <pubDate>21 Feb 2023 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230221_1300</guid>
  </item>
  <item>
   <title>New Lens: Rodenstock Rogonar 50mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE02706498_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Rodenstock Rogonar 50mm F2.8.</description>
   <pubDate>21 Feb 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230221_1200</guid>
  </item>
  <item>
   <title>New Lens: Rodenstock Rodagon-S 50mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01089991_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Rodenstock Rodagon-S 50mm f2.8.</description>
   <pubDate>20 Feb 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230220_1200</guid>
  </item>
  <item>
   <title>New Lens: Cosina Voigtlander Ultron 50mm f2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002627204_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Cosina Voigtlander Ultron 50mm f2.</description>
   <pubDate>11 Feb 2023 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230211_1300</guid>
  </item>
  <item>
   <title>New Lens: Canon EF50mm f1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1987-087922_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF50mm f1.8.</description>
   <pubDate>11 Feb 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230211_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon TC-16A</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1983-129411_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon TC-16A.</description>
   <pubDate>08 Feb 2023 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230208_1300</guid>
  </item>
  <item>
   <title>New Lens: Nikon Nikkor-O Auto 35mm f/2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB1238668_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor-O Auto 35mm f/2.</description>
   <pubDate>08 Feb 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230208_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon Nikkor 35mm f2.8 (35ti)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005243468_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor 35mm f2.8 (35ti).</description>
   <pubDate>07 Feb 2023 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230207_1300</guid>
  </item>
  <item>
   <title>New Lens: Nikon Nikkor 28mm f/2.8 (28ti)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005528428_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor 28mm f/2.8 (28ti).</description>
   <pubDate>07 Feb 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230207_1200</guid>
  </item>
  <item>
   <title>New Lens: Cosina Voigtlander Heliar 210mm F4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002645154_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Cosina Voigtlander Heliar 210mm F4.5.</description>
   <pubDate>06 Feb 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230206_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF150-600mm F5.6-8 R LM OIS WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE102022118285_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF150-600mm F5.6-8 R LM OIS WR.</description>
   <pubDate>02 Feb 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230202_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon EF35-350mm f3.5-5.6L USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005189557_Example07P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF35-350mm f3.5-5.6L USM.</description>
   <pubDate>30 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230130_1200</guid>
  </item>
  <item>
   <title>New Lens: Leica Telyt 400mm F5 (Wetzlar 1957)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01018236_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Telyt 400mm F5 (Wetzlar 1957).</description>
   <pubDate>29 Jan 2023 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230129_1300</guid>
  </item>
  <item>
   <title>New Lens: Nikon AF Zoom-Nikkor 35-105mm f/3.5-4.5D</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1992-293008_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Zoom-Nikkor 35-105mm f/3.5-4.5D.</description>
   <pubDate>29 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230129_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon AI-S AF Zoom-Nikkor 75-300mm f/4.5-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1989-078210_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI-S AF Zoom-Nikkor 75-300mm f/4.5-5.6.</description>
   <pubDate>28 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230128_1200</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta Hexanon 60mm F1.2 (1999)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1999-160615_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta Hexanon 60mm F1.2 (1999).</description>
   <pubDate>24 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230124_1200</guid>
  </item>
  <item>
   <title>New Lens: Kodak Ektar 52mm F1.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002397565_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Kodak Ektar 52mm F1.5.</description>
   <pubDate>23 Jan 2023 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230123_1500</guid>
  </item>
  <item>
   <title>New Lens: Kodak Ektar 100mm F6.3</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002518719_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Kodak Ektar 100mm F6.3.</description>
   <pubDate>23 Jan 2023 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230123_1400</guid>
  </item>
  <item>
   <title>New Lens: Wray 50mm F2 Unilite</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB0575076_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Wray 50mm F2 Unilite.</description>
   <pubDate>23 Jan 2023 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230123_1300</guid>
  </item>
  <item>
   <title>New Lens: Steinheil 50mm F3.5 Triple-Anastigmat Cassar Series 0</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE00434759_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Steinheil 50mm F3.5 Triple-Anastigmat Cassar Series 0.</description>
   <pubDate>23 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230123_1200</guid>
  </item>
  <item>
   <title>New Lens: Mamiya RZ67 250mm f4.5 APO</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1999-052234_ExampleMLP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Mamiya RZ67 250mm f4.5 APO.</description>
   <pubDate>18 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230118_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon-SW 65mm F5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1981-140311_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon-SW 65mm F5.6.</description>
   <pubDate>17 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230117_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon 250D (58mm)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1995-318801_Example02.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 250D (58mm).</description>
   <pubDate>14 Jan 2023 20:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230114_2000</guid>
  </item>
  <item>
   <title>New Lens: Canon 500D (58mm)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1995-318802_Example02.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 500D (58mm).</description>
   <pubDate>14 Jan 2023 19:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230114_1900</guid>
  </item>
  <item>
   <title>New Lens: Canon 250D (72mm)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1995-318801_Example03.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 250D (72mm).</description>
   <pubDate>14 Jan 2023 18:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230114_1800</guid>
  </item>
  <item>
   <title>New Lens: Canon EF300mm f4L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006618197_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF300mm f4L IS USM.</description>
   <pubDate>14 Jan 2023 17:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230114_1700</guid>
  </item>
  <item>
   <title>New Lens: Canon 250D (77mm)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1995-318801_Example04.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 250D (77mm).</description>
   <pubDate>14 Jan 2023 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230114_1600</guid>
  </item>
  <item>
   <title>New Lens: Canon 500D (72mm)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1995-318802_Example03.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 500D (72mm).</description>
   <pubDate>14 Jan 2023 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230114_1500</guid>
  </item>
  <item>
   <title>New Lens: Canon 500D (77mm)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1995-318802_Example04.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 500D (77mm).</description>
   <pubDate>14 Jan 2023 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230114_1400</guid>
  </item>
  <item>
   <title>New Lens: Canon 250D (52mm)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1995-318801_Example01.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 250D (52mm).</description>
   <pubDate>14 Jan 2023 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230114_1300</guid>
  </item>
  <item>
   <title>New Lens: Canon 500D (52mm)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1995-318802_Example01.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 500D (52mm).</description>
   <pubDate>14 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230114_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon EF-S17-55mm f2.8 IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2007-108398_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF-S17-55mm f2.8 IS USM.</description>
   <pubDate>12 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230112_1200</guid>
  </item>
  <item>
   <title>New Lens: Cosina Voigtlander Telomar 180mm f5.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/FR1045076_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Cosina Voigtlander Telomar 180mm f5.5.</description>
   <pubDate>09 Jan 2023 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230109_1500</guid>
  </item>
  <item>
   <title>New Lens: Cosina Voigtlander Tele-Dynar 100mm f6.3</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE00444150_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Cosina Voigtlander Tele-Dynar 100mm f6.3.</description>
   <pubDate>09 Jan 2023 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230109_1400</guid>
  </item>
  <item>
   <title>New Lens: Cosina Voigtlander Cine-Tele-Anastigmat 100mm F4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE00444150_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Cosina Voigtlander Cine-Tele-Anastigmat 100mm F4.5.</description>
   <pubDate>09 Jan 2023 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230109_1300</guid>
  </item>
  <item>
   <title>New Lens: Schneider Tele-Xenar 180mm f4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE00471565_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Tele-Xenar 180mm f4.5.</description>
   <pubDate>09 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230109_1200</guid>
  </item>
  <item>
   <title>New Lens: Tokina AT-X 35-200mm F3.5-4.5 (AT-X352)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1982-161804_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tokina AT-X 35-200mm F3.5-4.5 (AT-X352).</description>
   <pubDate>07 Jan 2023 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230107_1300</guid>
  </item>
  <item>
   <title>New Lens: Tokina AT-X 300mm f2.8 AF</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1986-215513_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tokina AT-X 300mm f2.8 AF.</description>
   <pubDate>07 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230107_1200</guid>
  </item>
  <item>
   <title>New Lens: Ricoh 18.3mm F2.5 (A12)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2012-003015_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh 18.3mm F2.5 (A12).</description>
   <pubDate>06 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230106_1200</guid>
  </item>
  <item>
   <title>New Lens: Ricoh 6.0mm F1.9 VC (GR)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2010-164839_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh 6.0mm F1.9 VC (GR).</description>
   <pubDate>05 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230105_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon New FD 100mm f2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1978-133028_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon New FD 100mm f2.</description>
   <pubDate>04 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230104_1200</guid>
  </item>
  <item>
   <title>New Lens: Zeiss Sonnar 50mm F1.5 Opton Contax</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002186621_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Sonnar 50mm F1.5 Opton Contax.</description>
   <pubDate>03 Jan 2023 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230103_1300</guid>
  </item>
  <item>
   <title>New Lens: Kapella 100mm F1</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002012822_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Kapella 100mm F1.</description>
   <pubDate>03 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230103_1200</guid>
  </item>
  <item>
   <title>New Lens: Sigma APO Macro 180mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1991-278012_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma APO Macro 180mm F2.8.</description>
   <pubDate>01 Jan 2023 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230101_1500</guid>
  </item>
  <item>
   <title>New Lens: Sigma Macro 90mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1989-316714_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma Macro 90mm F2.8.</description>
   <pubDate>01 Jan 2023 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230101_1400</guid>
  </item>
  <item>
   <title>New Lens: Sigma APO Macro 180mm F5.6 UC</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1992-110811_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma APO Macro 180mm F5.6 UC.</description>
   <pubDate>01 Jan 2023 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230101_1300</guid>
  </item>
  <item>
   <title>New Lens: Sigma APO Zoom 70-210mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1994-051202_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma APO Zoom 70-210mm F2.8.</description>
   <pubDate>01 Jan 2023 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20230101_1200</guid>
  </item>
  <item>
   <title>New Lens: Zeiss Mirotar f4.5 500mm</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB0975446_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Mirotar f4.5 500mm.</description>
   <pubDate>31 Dec 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221231_1200</guid>
  </item>
  <item>
   <title>New Lens: Vivitar Series 1 450mm F4.5 Solid Mirror</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004523816_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Vivitar Series 1 450mm F4.5 Solid Mirror.</description>
   <pubDate>29 Dec 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221229_1200</guid>
  </item>
  <item>
   <title>New Lens: Farrand Super-Farron 76mm f0.87</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002846923_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Farrand Super-Farron 76mm f0.87.</description>
   <pubDate>27 Dec 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221227_1300</guid>
  </item>
  <item>
   <title>New Lens: Wray 64mm F0.7</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB0696902_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Wray 64mm F0.7.</description>
   <pubDate>27 Dec 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221227_1200</guid>
  </item>
  <item>
   <title>New Lens: Viltrox AF 75mm F1.2 STM ED IF</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN114755806_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Viltrox AF 75mm F1.2 STM ED IF.</description>
   <pubDate>26 Dec 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221226_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon 45mm F4 Super EBC (GA645 Wide Professional)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005621575_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon 45mm F4 Super EBC (GA645 Wide Professional).</description>
   <pubDate>25 Dec 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221225_1300</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon 60mm F4 Super EBC (GA645 Professional)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005548447_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon 60mm F4 Super EBC (GA645 Professional).</description>
   <pubDate>25 Dec 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221225_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon Nikkor Z DX 18-140mm f/3.5-6.3 VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2022-264542_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z DX 18-140mm f/3.5-6.3 VR.</description>
   <pubDate>22 Dec 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221222_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon 7.1-28.4mm F2.0-2.8 Super EBC (X10)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20140133036_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon 7.1-28.4mm F2.0-2.8 Super EBC (X10).</description>
   <pubDate>21 Dec 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221221_1400</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm XTL-X100</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150226942_Example01FCLP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm XTL-X100.</description>
   <pubDate>21 Dec 2022 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Fujifilm XTL-X100 with Fujifilm Fujinon 23mm F2</title>
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   <description>Fujifilm XTL-X100 with Fujifilm Fujinon 23mm F2.</description>
   <pubDate>21 Dec 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 600mm F8 Mirror MF ZEN</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1987-184425_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 600mm F8 Mirror MF ZEN.</description>
   <pubDate>18 Dec 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Nikkor Z 24-120mm f/4 S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2022-259649_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z 24-120mm f/4 S.</description>
   <pubDate>15 Dec 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon TC-301</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1980-166613_ExampleRCL2P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon TC-301.</description>
   <pubDate>14 Dec 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Nikkor 300mm ED f/4.5 with Nikon TC-301</title>
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   <description>Nikon Nikkor 300mm ED f/4.5 with Nikon TC-301.</description>
   <pubDate>14 Dec 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI Zoom-Nikkor 50-300mm f/4.5 ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004189213_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI Zoom-Nikkor 50-300mm f/4.5 ED.</description>
   <pubDate>13 Dec 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Ultra-Micro-Nikkor 29.5mm f/1.2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB1050055_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Ultra-Micro-Nikkor 29.5mm f/1.2.</description>
   <pubDate>13 Dec 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta 250mm F5.6 RF</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004264136_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta 250mm F5.6 RF.</description>
   <pubDate>04 Dec 2022 19:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI Reflex-Nikkor 1000mm f/11</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003507556_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI Reflex-Nikkor 1000mm f/11.</description>
   <pubDate>04 Dec 2022 18:00:00 -0500</pubDate>
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   <title>New Lens: Canon 500mm f8 Zuiko Reflex</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004188091_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 500mm f8 Zuiko Reflex.</description>
   <pubDate>04 Dec 2022 17:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Reflex-Nikkor-C 500mm F/8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003632190_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Reflex-Nikkor-C 500mm F/8.</description>
   <pubDate>04 Dec 2022 16:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta AF Reflex 500mm F8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004951078_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF Reflex 500mm F8.</description>
   <pubDate>04 Dec 2022 15:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Reflex-Nikkor 500mm f/8(new)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004666259_Example01_Tale13.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Reflex-Nikkor 500mm f/8(new).</description>
   <pubDate>04 Dec 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Canon New FD 500mm f8 Mirror</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004165151_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon New FD 500mm f8 Mirror.</description>
   <pubDate>04 Dec 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax Reflex 400-600mm F8-12</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004443068_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax Reflex 400-600mm F8-12.</description>
   <pubDate>04 Dec 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Kodak Ektar 50mm F3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002165328_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Kodak Ektar 50mm F3.5.</description>
   <pubDate>01 Dec 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Kodak Aero Ektar 153mm F3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002983193_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Kodak Aero Ektar 153mm F3.5.</description>
   <pubDate>30 Nov 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta APO Tele Converter 1.4x</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1988-200113_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta APO Tele Converter 1.4x.</description>
   <pubDate>29 Nov 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Vario-Sonnar 85-250mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01447293_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Vario-Sonnar 85-250mm F4.</description>
   <pubDate>27 Nov 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Olympia-Sonnar 180mm F2.8 Contarex</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01268404_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Olympia-Sonnar 180mm F2.8 Contarex.</description>
   <pubDate>27 Nov 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Vario-Sonnar 10-100mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB1167114_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Vario-Sonnar 10-100mm F2.8.</description>
   <pubDate>27 Nov 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta AF 35-105mm F3.5-4.5 v2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004871239_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 35-105mm F3.5-4.5 v2.</description>
   <pubDate>24 Nov 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta AF 300mm F2.8 APO</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004518229_Example08P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 300mm F2.8 APO.</description>
   <pubDate>23 Nov 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta 75-150mm F4.0 MD Zoom</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1981-150717_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta 75-150mm F4.0 MD Zoom.</description>
   <pubDate>23 Nov 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta 50mm F2.0 MD</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004444473_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta 50mm F2.0 MD.</description>
   <pubDate>22 Nov 2022 15:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta 600mm F6.3 MD Apo-Tele</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004126378_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta 600mm F6.3 MD Apo-Tele.</description>
   <pubDate>22 Nov 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta Zoom-Rokkor 40-80mm f2.8 MC</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004231636_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta Zoom-Rokkor 40-80mm f2.8 MC.</description>
   <pubDate>22 Nov 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta 50mm F1.4 MD</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004182550_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta 50mm F1.4 MD.</description>
   <pubDate>22 Nov 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-A 85mm F1.4</title>
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   <description>Ricoh smc Pentax-A 85mm F1.4.</description>
   <pubDate>21 Nov 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-M 150mm F3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004134645_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-M 150mm F3.5.</description>
   <pubDate>20 Nov 2022 18:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-A 35-105mm F3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004576443_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-A 35-105mm F3.5.</description>
   <pubDate>20 Nov 2022 17:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-F 28mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004468100_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-F 28mm F2.8.</description>
   <pubDate>20 Nov 2022 16:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-A 70-210mm F4.0</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004468098_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-A 70-210mm F4.0.</description>
   <pubDate>20 Nov 2022 15:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-M 200mm F4.0</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004139264_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-M 200mm F4.0.</description>
   <pubDate>20 Nov 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-M 135mm F3.5</title>
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   <description>Ricoh smc Pentax-M 135mm F3.5.</description>
   <pubDate>20 Nov 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-M 120mm F2.8</title>
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   <description>Ricoh smc Pentax-M 120mm F2.8.</description>
   <pubDate>20 Nov 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Panasonic Leica DG Vario-Summilux 25-50mm F1.7 Asph</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20220365327_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Leica DG Vario-Summilux 25-50mm F1.7 Asph.</description>
   <pubDate>19 Nov 2022 15:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-M 20mm F4.0</title>
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   <description>Ricoh smc Pentax-M 20mm F4.0.</description>
   <pubDate>19 Nov 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-A 35mm F2.8</title>
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   <description>Ricoh smc Pentax-A 35mm F2.8.</description>
   <pubDate>19 Nov 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-M 28mm F3.5</title>
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   <description>Ricoh smc Pentax-M 28mm F3.5.</description>
   <pubDate>19 Nov 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Tamron 28-300mm F3.5-6.3 Di VC PZD</title>
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   <description>Tamron 28-300mm F3.5-6.3 Di VC PZD.</description>
   <pubDate>18 Nov 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Tamron SP AF 200-500mm F5.0-6.3 Di LD [IF] A08</title>
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   <description>Tamron SP AF 200-500mm F5.0-6.3 Di LD [IF] A08.</description>
   <pubDate>17 Nov 2022 15:00:00 -0500</pubDate>
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   <title>New Lens: Tamron AF 28-200mm F3.8-5.6 Aspherical 71D</title>
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   <description>Tamron AF 28-200mm F3.8-5.6 Aspherical 71D.</description>
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   <title>New Lens: Tamron SP AF 180mm F3.5 Di LD [IF] Macro B01</title>
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   <description>Tamron SP AF 180mm F3.5 Di LD [IF] Macro B01.</description>
   <pubDate>17 Nov 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical [IF] A16 A16N II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2007-133138_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical [IF] A16 A16N II.</description>
   <pubDate>17 Nov 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF24mm f1.4L II USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20100033848_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF24mm f1.4L II USM.</description>
   <pubDate>13 Nov 2022 12:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Vivitar Series 1 70-210mm F3.5 Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1976-063635_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Vivitar Series 1 70-210mm F3.5 Macro.</description>
   <pubDate>12 Nov 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221112_1200</guid>
  </item>
  <item>
   <title>New Lens: Kino Precision Kiron 105mm F2.8 MC Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1986-067815_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Kino Precision Kiron 105mm F2.8 MC Macro.</description>
   <pubDate>11 Nov 2022 12:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Sigma APO 50-500mm F4.5-6.3 DG OS HSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2011-039260_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma APO 50-500mm F4.5-6.3 DG OS HSM.</description>
   <pubDate>10 Nov 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221110_1400</guid>
  </item>
  <item>
   <title>New Lens: Sigma 10-20mm F3.5 EX DC HSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2010-243737_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 10-20mm F3.5 EX DC HSM.</description>
   <pubDate>10 Nov 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221110_1300</guid>
  </item>
  <item>
   <title>New Lens: Sigma 18-50mm F2.8-4.5 DC OS HSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2010-211056_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 18-50mm F2.8-4.5 DC OS HSM.</description>
   <pubDate>10 Nov 2022 12:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Leica DC Vario-Summilux 4.7-17.7mm F1.4-2.3 (Panasonic LX7)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150124127_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica DC Vario-Summilux 4.7-17.7mm F1.4-2.3 (Panasonic LX7).</description>
   <pubDate>08 Nov 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221108_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon RF28-70mm F2 L USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2020-118807_ExampleMLAP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF28-70mm F2 L USM.</description>
   <pubDate>07 Nov 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221107_1200</guid>
  </item>
  <item>
   <title>New Lens: Zeiss DigiPrime Distagon T1.6 40mm</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20030189767_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss DigiPrime Distagon T1.6 40mm.</description>
   <pubDate>30 Oct 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221030_1200</guid>
  </item>
  <item>
   <title>New Lens: Ricoh XR Rikenon 50mm F2.0</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1978-131034_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh XR Rikenon 50mm F2.0.</description>
   <pubDate>28 Oct 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221028_1300</guid>
  </item>
  <item>
   <title>New Lens: Ricoh XR Rikenon 28mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1981-012612_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh XR Rikenon 28mm F2.8.</description>
   <pubDate>28 Oct 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221028_1200</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-F 300mm F4.5 ED [IF]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004812026_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-F 300mm F4.5 ED [IF].</description>
   <pubDate>27 Oct 2022 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221027_1600</guid>
  </item>
  <item>
   <title>New Lens: Ricoh Pentax Super-Takumar 135mm f2.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003459469_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh Pentax Super-Takumar 135mm f2.5.</description>
   <pubDate>27 Oct 2022 15:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Ricoh Pentax-110 24mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004223982_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh Pentax-110 24mm F2.8.</description>
   <pubDate>27 Oct 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221027_1400</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax 6x7 800mm f6.7</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1984-088715_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax 6x7 800mm f6.7.</description>
   <pubDate>27 Oct 2022 13:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-A 645 35mm f3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1986-285417_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-A 645 35mm f3.5.</description>
   <pubDate>27 Oct 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221027_1200</guid>
  </item>
  <item>
   <title>New Lens: Miranda Auto EC 35mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1976-053823_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Miranda Auto EC 35mm F2.8.</description>
   <pubDate>26 Oct 2022 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221026_1600</guid>
  </item>
  <item>
   <title>New Lens: Miranda Auto EC 135mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1976-074627_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Miranda Auto EC 135mm F2.8.</description>
   <pubDate>26 Oct 2022 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221026_1500</guid>
  </item>
  <item>
   <title>New Lens: Miranda Auto EC 200mm F3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1976-114926_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Miranda Auto EC 200mm F3.5.</description>
   <pubDate>26 Oct 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221026_1400</guid>
  </item>
  <item>
   <title>New Lens: Miranda Auto E 50mm F1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003634001_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Miranda Auto E 50mm F1.4.</description>
   <pubDate>26 Oct 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221026_1300</guid>
  </item>
  <item>
   <title>New Lens: Topcon 35-100mm F3.5-4.3</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1979-080143_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Topcon 35-100mm F3.5-4.3.</description>
   <pubDate>26 Oct 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221026_1200</guid>
  </item>
  <item>
   <title>New Lens: Yashica ML 300mm F5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1978-129629_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Yashica ML 300mm F5.6.</description>
   <pubDate>25 Oct 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221025_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XC16-50mm F3.5-5.6 OIS II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20140368925_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XC16-50mm F3.5-5.6 OIS II.</description>
   <pubDate>24 Oct 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221024_1300</guid>
  </item>
  <item>
   <title>New Lens: Yashica Auto Yashinon-DS 20mm F3.3</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003856386_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Yashica Auto Yashinon-DS 20mm F3.3.</description>
   <pubDate>24 Oct 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221024_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF18mm F2 R</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20140240851_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF18mm F2 R.</description>
   <pubDate>23 Oct 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221023_1200</guid>
  </item>
  <item>
   <title>New Lens: Olympus Zuiko Digital ED 90-250mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2006-201524_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus Zuiko Digital ED 90-250mm F2.8.</description>
   <pubDate>22 Oct 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221022_1400</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon 85mm F4.0 SF EBC</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1980-000560_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon 85mm F4.0 SF EBC.</description>
   <pubDate>22 Oct 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221022_1300</guid>
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  <item>
   <title>New Lens: Fujifilm Fujinon-W 35mm f1.9 EBC</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004018512_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon-W 35mm f1.9 EBC.</description>
   <pubDate>22 Oct 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221022_1200</guid>
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  <item>
   <title>New Lens: Fujifilm Fujinon 18.5mm F2.8 (X70)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20170075089_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon 18.5mm F2.8 (X70).</description>
   <pubDate>21 Oct 2022 16:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Fujifilm Fujinon 23mm F2.0 Super EBC (X100F)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20120069456_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon 23mm F2.0 Super EBC (X100F).</description>
   <pubDate>21 Oct 2022 15:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Fujifilm X-Fujinon-SW 24mm f2.8 DM EBC</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004158482_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm X-Fujinon-SW 24mm f2.8 DM EBC.</description>
   <pubDate>21 Oct 2022 14:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon-Z 43-75mm F3.5-4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004195912_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon-Z 43-75mm F3.5-4.5.</description>
   <pubDate>21 Oct 2022 13:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon 23mm F2.0 II Super EBC (X100V)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200333569_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon 23mm F2.0 II Super EBC (X100V).</description>
   <pubDate>21 Oct 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221021_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon Zoom-Nikkor 5.6-16.8mm f/2.7-4.8 (Coolpix SQ)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20030072085_Example01_Tale22.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Zoom-Nikkor 5.6-16.8mm f/2.7-4.8 (Coolpix SQ).</description>
   <pubDate>19 Oct 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221019_1300</guid>
  </item>
  <item>
   <title>New Lens: Nikon Zoom-Nikkor 8-24mm f2.8-4.9 (Coolpix 4300)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2003-177313_Example01_Tale22.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Zoom-Nikkor 8-24mm f2.8-4.9 (Coolpix 4300).</description>
   <pubDate>19 Oct 2022 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Zeiss Sonnar 35mm F2.0 (Sony DSC-RX1RM2)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20140071333_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Sonnar 35mm F2.0 (Sony DSC-RX1RM2).</description>
   <pubDate>18 Oct 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221018_1200</guid>
  </item>
  <item>
   <title>New Lens: Zeiss Vario-Sonnar 8.8-73.3mm F2.8 (Sony DSC-RX10M1-2)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20140354857_Example07P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Vario-Sonnar 8.8-73.3mm F2.8 (Sony DSC-RX10M1-2).</description>
   <pubDate>17 Oct 2022 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221017_1600</guid>
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  <item>
   <title>New Lens: Sony E 35mm F1.8 OSS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2014-089352_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony E 35mm F1.8 OSS.</description>
   <pubDate>17 Oct 2022 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221017_1500</guid>
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  <item>
   <title>New Lens: Canon FD50mm f1.8 SC</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1988-081312_ExampleMLP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon FD50mm f1.8 SC.</description>
   <pubDate>17 Oct 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221017_1400</guid>
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  <item>
   <title>New Lens: Canon Extender EF2X</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1988-106715_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon Extender EF2X.</description>
   <pubDate>17 Oct 2022 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon Extender EF1.4X</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1988-147127_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon Extender EF1.4X.</description>
   <pubDate>17 Oct 2022 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Sony DT 18-200mm F3.5-6.3</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20080158689_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony DT 18-200mm F3.5-6.3.</description>
   <pubDate>15 Oct 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221015_1400</guid>
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  <item>
   <title>New Lens: Zeiss Vario-Sonnar T 14.3-71.5mm F2.8-4.8 (Sony DCS-R1)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20080218875_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Vario-Sonnar T 14.3-71.5mm F2.8-4.8 (Sony DCS-R1).</description>
   <pubDate>15 Oct 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221015_1300</guid>
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  <item>
   <title>New Lens: Sony DT 18-250 mm F3.5-6.3</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20070297067_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony DT 18-250 mm F3.5-6.3.</description>
   <pubDate>15 Oct 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221015_1200</guid>
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  <item>
   <title>New Lens: Tamron AF 28-300mm F3.5-6.3 XR Di LD Aspherical [IF] Macro A061</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20030156333_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron AF 28-300mm F3.5-6.3 XR Di LD Aspherical [IF] Macro A061.</description>
   <pubDate>14 Oct 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221014_1400</guid>
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  <item>
   <title>New Lens: Konica Minolta AF 28-75mm F2.8 D</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2004-101739_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 28-75mm F2.8 D.</description>
   <pubDate>14 Oct 2022 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Yashica ML 24mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1975-110330_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Yashica ML 24mm F2.8.</description>
   <pubDate>14 Oct 2022 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Hasselblad HC 4.5 300 (Fujinon)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20060209426_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Hasselblad HC 4.5 300 (Fujinon).</description>
   <pubDate>13 Oct 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20221013_1300</guid>
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  <item>
   <title>New Lens: Hasselblad HC 2.8 80 (Fujinon)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20010050819_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Hasselblad HC 2.8 80 (Fujinon).</description>
   <pubDate>13 Oct 2022 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Leica APO-Macro-Elmarit-TL 60mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2016-090725_Example09P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica APO-Macro-Elmarit-TL 60mm F2.8.</description>
   <pubDate>12 Oct 2022 15:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Yongnuo YN16mm F1.8S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN214795390_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Yongnuo YN16mm F1.8S.</description>
   <pubDate>12 Oct 2022 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Leica Summilux 28mm f1.7 Asph (Leica Q2)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20160266350_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Summilux 28mm f1.7 Asph (Leica Q2).</description>
   <pubDate>12 Oct 2022 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Zeiss Vario-Sonnar T 10.4-37.1mm F1.8-4.9 (Sony DSC-RX100M1-2)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20130314585_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Vario-Sonnar T 10.4-37.1mm F1.8-4.9 (Sony DSC-RX100M1-2).</description>
   <pubDate>12 Oct 2022 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon MP-E65mm f2.8 1-5X Macro Photo</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1999-281892_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon MP-E65mm f2.8 1-5X Macro Photo.</description>
   <pubDate>10 Oct 2022 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Leica DC Vario-Elmarit 8.8-176mm F2.8-4.5 ASPH (Panasonic FZ2500,FZ2000,FZH1)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180081156_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica DC Vario-Elmarit 8.8-176mm F2.8-4.5 ASPH (Panasonic FZ2500,FZ2000,FZH1).</description>
   <pubDate>10 Oct 2022 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon EF-S10-22mm f3.5-4.5 USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20050286139_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF-S10-22mm f3.5-4.5 USM.</description>
   <pubDate>09 Oct 2022 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Konica Minolta AF 35-80mm F4-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1989-284819_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 35-80mm F4-5.6.</description>
   <pubDate>08 Oct 2022 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon AF Nikkor 85mm f/1.8D</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1995-209571_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Nikkor 85mm f/1.8D.</description>
   <pubDate>05 Oct 2022 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon AF Zoom-Nikkor 28-105mm f/3.5-4.5D IF</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1999-142740_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Zoom-Nikkor 28-105mm f/3.5-4.5D IF.</description>
   <pubDate>05 Oct 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon IX-Nikkor 30-60mm f/4-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1998-206733_Example05_Tale83.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon IX-Nikkor 30-60mm f/4-5.6.</description>
   <pubDate>03 Oct 2022 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon EF35mm f2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1992-015611_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF35mm f2.</description>
   <pubDate>02 Oct 2022 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon EF20-35mm f3.5-4.5 USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1994-230281_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF20-35mm f3.5-4.5 USM.</description>
   <pubDate>02 Oct 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon New FD75-200mm f4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1985-088917_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon New FD75-200mm f4.5.</description>
   <pubDate>01 Oct 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF35-70mm f3.5-4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1987-124516_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF35-70mm f3.5-4.5.</description>
   <pubDate>30 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon New FD35-105mm f3.5-4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1986-212814_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon New FD35-105mm f3.5-4.5.</description>
   <pubDate>28 Sep 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220928_1200</guid>
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   <title>New Lens: Meyer Optik Gorlitz 135mm F2.8 Orestor</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01282311_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Meyer Optik Gorlitz 135mm F2.8 Orestor.</description>
   <pubDate>27 Sep 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220927_1200</guid>
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   <title>New Lens: Sigma 18-50mm F2.8 DC DN C</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2022-138408_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 18-50mm F2.8 DC DN C.</description>
   <pubDate>26 Sep 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220926_1200</guid>
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   <title>New Lens: Mamiya-Sekor CS 35mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1978-066222_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Mamiya-Sekor CS 35mm f2.8.</description>
   <pubDate>25 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF-S18-135mm f3.5-5.6 IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20130088622_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF-S18-135mm f3.5-5.6 IS STM.</description>
   <pubDate>22 Sep 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF400mm f5.6L USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2018-180209_Example01AP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF400mm f5.6L USM.</description>
   <pubDate>22 Sep 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF24-105mm f4L IS II USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20170374291_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF24-105mm f4L IS II USM.</description>
   <pubDate>22 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF-S15-85mm f3.5-5.6 IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20100302648_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF-S15-85mm f3.5-5.6 IS USM.</description>
   <pubDate>21 Sep 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF70-200mm f4L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2008-070450_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF70-200mm f4L IS USM.</description>
   <pubDate>21 Sep 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF-S18-55mm f3.5-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20070058265_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF-S18-55mm f3.5-5.6.</description>
   <pubDate>21 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF70-300mm f4-5.6 IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2007-003600_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF70-300mm f4-5.6 IS USM.</description>
   <pubDate>20 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF28-200mm f3.5-5.6 USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2001-350095_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF28-200mm f3.5-5.6 USM.</description>
   <pubDate>17 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF100-400mm f4.5-5.6L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2000-047107_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF100-400mm f4.5-5.6L IS USM.</description>
   <pubDate>16 Sep 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF300mm f2.8L USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006288845_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF300mm f2.8L USM.</description>
   <pubDate>16 Sep 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF24mm f1.4L USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1999-030743_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF24mm f1.4L USM.</description>
   <pubDate>16 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF70-200mm f2.8L USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005537259_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF70-200mm f2.8L USM.</description>
   <pubDate>15 Sep 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh HD Pentax-DA 16-50mm F2.8 ED PLM AW</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2021-192088_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh HD Pentax-DA 16-50mm F2.8 ED PLM AW.</description>
   <pubDate>15 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF200mm f2.8L II USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1993-027163_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF200mm f2.8L II USM.</description>
   <pubDate>14 Sep 2022 16:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon XF33 F1.4 R LM WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20220276464_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF33 F1.4 R LM WR.</description>
   <pubDate>14 Sep 2022 15:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF100mm f2.8 Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1991-141313_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF100mm f2.8 Macro.</description>
   <pubDate>14 Sep 2022 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon EF200mm f1.8L USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1989-102413_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF200mm f1.8L USM.</description>
   <pubDate>14 Sep 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon XF23mm F1.4 R LM WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20220276464_Example07P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF23mm F1.4 R LM WR.</description>
   <pubDate>14 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF100-300mm f5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1986-077818_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF100-300mm f5.6.</description>
   <pubDate>13 Sep 2022 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon EF28mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1987-078520_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF28mm f2.8.</description>
   <pubDate>13 Sep 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF50mm f2.5 Compact Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1988-179308_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF50mm f2.5 Compact Macro.</description>
   <pubDate>13 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon New FD50-135mm f3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1980-121418_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon New FD50-135mm f3.5.</description>
   <pubDate>11 Sep 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220911_1200</guid>
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   <title>New Lens: Canon FD35-70mm f2.8-3.5 SSC</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003848969_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon FD35-70mm f2.8-3.5 SSC.</description>
   <pubDate>10 Sep 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Canon FD17mm f4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003748021_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon FD17mm f4.</description>
   <pubDate>10 Sep 2022 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon FD24mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003748021_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon FD24mm f2.8.</description>
   <pubDate>10 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF100-400mm f4.5-5.6L IS II USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150146044_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF100-400mm f4.5-5.6L IS II USM.</description>
   <pubDate>09 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Hasselblad XCD 2.5 90V</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2022-099402_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Hasselblad XCD 2.5 90V.</description>
   <pubDate>08 Sep 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon 90mm f/4.8 Fuwatto Soft</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005796530_Example04SF2.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon 90mm f/4.8 Fuwatto Soft.</description>
   <pubDate>08 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon 120mm f/4.5 Gugutto Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005764425_Example04.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon 120mm f/4.5 Gugutto Macro.</description>
   <pubDate>07 Sep 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon 20mm f/8 Gyogyotto Fisheye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005949588_Example08.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon 20mm f/8 Gyogyotto Fisheye.</description>
   <pubDate>07 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S DX Zoom-Nikkor 55-200mm f/4-5.6G IF-ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20070183042_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Zoom-Nikkor 55-200mm f/4-5.6G IF-ED VR.</description>
   <pubDate>06 Sep 2022 15:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S DX Zoom-Nikkor 18-135mm f/3.5-5.6G IF-ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20070070521_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Zoom-Nikkor 18-135mm f/3.5-5.6G IF-ED.</description>
   <pubDate>06 Sep 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S DX Zoom-Nikkor 18-70mm f/3.5-4.5G IF-ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20050068636_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Zoom-Nikkor 18-70mm f/3.5-4.5G IF-ED.</description>
   <pubDate>06 Sep 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Zoom-Nikkor 24-120mm f/3.5-5.6G IF-ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20040218274_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Zoom-Nikkor 24-120mm f/3.5-5.6G IF-ED VR.</description>
   <pubDate>06 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon 1 Nikkor 11-27.5mm f/3.5-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150153549_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon 1 Nikkor 11-27.5mm f/3.5-5.6.</description>
   <pubDate>05 Sep 2022 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon AF-S Nikkor 24-85mm f/3.5-4.5G ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2011-221421_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 24-85mm f/3.5-4.5G ED VR.</description>
   <pubDate>05 Sep 2022 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon AF-S Zoom-Nikkor 24-85mm f/3.5-4.5G IF-ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2003-241093_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Zoom-Nikkor 24-85mm f/3.5-4.5G IF-ED.</description>
   <pubDate>05 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI-S AF Nikkor 85mm f/1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004812027_Example01.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI-S AF Nikkor 85mm f/1.8.</description>
   <pubDate>04 Sep 2022 17:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF Nikkor 20-35mm F/2.8D IF</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005666230_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Nikkor 20-35mm F/2.8D IF.</description>
   <pubDate>04 Sep 2022 16:00:00 -0500</pubDate>
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   <title>New Lens: Nikon 400mm f/8 Dodotto Tele</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1997-105860_Example01_Tale54.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon 400mm f/8 Dodotto Tele.</description>
   <pubDate>04 Sep 2022 15:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF Zoom-Nikkor 70-210mm f/4-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1988-118116_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Zoom-Nikkor 70-210mm f/4-5.6.</description>
   <pubDate>04 Sep 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI-S AF Nikkor 85mm f/1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004812027_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI-S AF Nikkor 85mm f/1.8.</description>
   <pubDate>04 Sep 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Zoom-Nikkor 70-300mm f/4.5-5.6G IF-ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20050219708_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Zoom-Nikkor 70-300mm f/4.5-5.6G IF-ED VR.</description>
   <pubDate>04 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI-S Zoom-Nikkor 35-135mm f/3.5-4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1986-169808_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI-S Zoom-Nikkor 35-135mm f/3.5-4.5.</description>
   <pubDate>03 Sep 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF Zoom-Nikkor 80-200mm f/2.8D ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1987-108218_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Zoom-Nikkor 80-200mm f/2.8D ED.</description>
   <pubDate>03 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Nikkor 600mm F/5.6 ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1976-043918_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor 600mm F/5.6 ED.</description>
   <pubDate>02 Sep 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220902_1300</guid>
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   <title>New Lens: Nikon Nikkor 1200mm F/11 ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1976-043920_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor 1200mm F/11 ED.</description>
   <pubDate>02 Sep 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Olympus M.Zuiko 17mm F1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2013-186458_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus M.Zuiko 17mm F1.8.</description>
   <pubDate>31 Aug 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S DX Zoom-Nikkor 17-55mm f/2.8G IF-ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20050013015_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Zoom-Nikkor 17-55mm f/2.8G IF-ED.</description>
   <pubDate>30 Aug 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax 6x7 75mm f4.5 Shift</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1979-099427_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax 6x7 75mm f4.5 Shift.</description>
   <pubDate>29 Aug 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-FA J 28-80mm F3.5-5.6 AL</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20030218799_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA J 28-80mm F3.5-5.6 AL.</description>
   <pubDate>29 Aug 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Nikkor 400mm f/2.8G ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20080158694_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 400mm f/2.8G ED VR.</description>
   <pubDate>28 Aug 2022 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon AF-S Nikkor 500mm f/4G ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20090190239_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 500mm f/4G ED VR.</description>
   <pubDate>28 Aug 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon PC-E Nikkor 24mm f/3.5D ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2008-151949_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon PC-E Nikkor 24mm f/3.5D ED.</description>
   <pubDate>28 Aug 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta AF 70-210mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1983-001118_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 70-210mm F4.</description>
   <pubDate>27 Aug 2022 15:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax 6x7 400mm f4 ED [IF]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1986-051117_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax 6x7 400mm f4 ED [IF].</description>
   <pubDate>27 Aug 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta AF 50mm F2.8 Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1984-228220_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 50mm F2.8 Macro.</description>
   <pubDate>27 Aug 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax 6x7 300mm f4 ED [IF]</title>
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   <description>Ricoh smc Pentax 6x7 300mm f4 ED [IF].</description>
   <pubDate>27 Aug 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Olympus M.Zuiko Digital ED 40-150mm F4.0 Pro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP007118221_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus M.Zuiko Digital ED 40-150mm F4.0 Pro.</description>
   <pubDate>25 Aug 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF-S60mm f2.8 Macro USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2006-153942_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF-S60mm f2.8 Macro USM.</description>
   <pubDate>23 Aug 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF14mm f2.8L USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1993-034592_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF14mm f2.8L USM.</description>
   <pubDate>23 Aug 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh HD Pentax-D FA 21mmF2.4ED Limited DC WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2022-117775_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh HD Pentax-D FA 21mmF2.4ED Limited DC WR.</description>
   <pubDate>22 Aug 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220822_1300</guid>
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   <title>New Lens: Angenieux DEM 180mm F2.3 APO</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004726669_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Angenieux DEM 180mm F2.3 APO.</description>
   <pubDate>22 Aug 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Panasonic Lumix S 35mm F1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN216772097_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Lumix S 35mm F1.8.</description>
   <pubDate>20 Aug 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Pro-Tessar 35mm f3.2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01089183_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Pro-Tessar 35mm f3.2.</description>
   <pubDate>19 Aug 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220819_1200</guid>
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   <title>New Lens: Mamiya Sekor D AF 150mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2001-183581_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Mamiya Sekor D AF 150mm f2.8.</description>
   <pubDate>17 Aug 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Schneider Xenon 2 / 50</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CH352844_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Xenon 2 / 50.</description>
   <pubDate>16 Aug 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220816_1300</guid>
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   <title>New Lens: Schneider Tele-Variogon 4.0 / 80-240</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003336094_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Tele-Variogon 4.0 / 80-240.</description>
   <pubDate>16 Aug 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Schneider Curtagon 2.8 / 35 gen 2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003318653_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Curtagon 2.8 / 35 gen 2.</description>
   <pubDate>15 Aug 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220815_1300</guid>
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   <title>New Lens: Schneider Super-Symmar HM 5.6 / 120</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004773745_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Super-Symmar HM 5.6 / 120.</description>
   <pubDate>15 Aug 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220815_1200</guid>
  </item>
  <item>
   <title>New Lens: Leica APO-Telyt-R 280mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005388006_ExampleFR1F01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica APO-Telyt-R 280mm F2.8.</description>
   <pubDate>12 Aug 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220812_1300</guid>
  </item>
  <item>
   <title>New Lens: Leica Elmar-M 135mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01183707_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Elmar-M 135mm F4.</description>
   <pubDate>12 Aug 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220812_1200</guid>
  </item>
  <item>
   <title>New Lens: Sigma 17-70mm F2.8-4 DC Macro OS HSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2011-128361_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 17-70mm F2.8-4 DC Macro OS HSM.</description>
   <pubDate>10 Aug 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220810_1200</guid>
  </item>
  <item>
   <title>New Lens: Sigma 18-125mm F3.5-5.6 DC</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2005-331697_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 18-125mm F3.5-5.6 DC.</description>
   <pubDate>09 Aug 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220809_1400</guid>
  </item>
  <item>
   <title>New Lens: Sigma APO 135-400mm F4.5-5.6 RF ZEN</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1998-039215_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma APO 135-400mm F4.5-5.6 RF ZEN.</description>
   <pubDate>09 Aug 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220809_1300</guid>
  </item>
  <item>
   <title>New Lens: Sigma 28-80mm F3.5-5.6 Aspherical Macro HF</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2001-350089_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 28-80mm F3.5-5.6 Aspherical Macro HF.</description>
   <pubDate>09 Aug 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220809_1200</guid>
  </item>
  <item>
   <title>New Lens: Hasselblad HC 4 120 Macro (Fujinon)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2004-302170_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Hasselblad HC 4 120 Macro (Fujinon).</description>
   <pubDate>08 Aug 2022 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220808_1600</guid>
  </item>
  <item>
   <title>New Lens: Hasselblad HC 3.2 150 (Fujinon)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20020075570_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Hasselblad HC 3.2 150 (Fujinon).</description>
   <pubDate>08 Aug 2022 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220808_1500</guid>
  </item>
  <item>
   <title>New Lens: Hasselblad HC TC 1.7x (Fujinon)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20020191303_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Hasselblad HC TC 1.7x (Fujinon).</description>
   <pubDate>08 Aug 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220808_1400</guid>
  </item>
  <item>
   <title>New Lens: Hasselblad HC 3.5 50 (Fujinon)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20030011895_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Hasselblad HC 3.5 50 (Fujinon).</description>
   <pubDate>08 Aug 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220808_1300</guid>
  </item>
  <item>
   <title>New Lens: Hasselblad HC 4 210 (Fujinon)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006445511_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Hasselblad HC 4 210 (Fujinon).</description>
   <pubDate>08 Aug 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220808_1200</guid>
  </item>
  <item>
   <title>New Lens: Olympus 35-70mm F3.6 Zuiko Auto-Zoom</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004153338_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus 35-70mm F3.6 Zuiko Auto-Zoom.</description>
   <pubDate>06 Aug 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220806_1300</guid>
  </item>
  <item>
   <title>New Lens: Olympus 24mm F2.8 Zuiko Auto-W</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003994574_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus 24mm F2.8 Zuiko Auto-W.</description>
   <pubDate>06 Aug 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220806_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon FD150-600mm f5.6L</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004110006_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon FD150-600mm f5.6L.</description>
   <pubDate>05 Aug 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220805_1300</guid>
  </item>
  <item>
   <title>New Lens: Canon FD300mm f2.8 SSC Fluorite</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003868174_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon FD300mm f2.8 SSC Fluorite.</description>
   <pubDate>05 Aug 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220805_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon New FD70-210mm f4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004380377_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon New FD70-210mm f4.</description>
   <pubDate>04 Aug 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220804_1300</guid>
  </item>
  <item>
   <title>New Lens: Canon New FD50-300mm f4.5L</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004398808_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon New FD50-300mm f4.5L.</description>
   <pubDate>04 Aug 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220804_1200</guid>
  </item>
  <item>
   <title>New Lens: Ricoh HD Pentax-DA 20-40mm F2.8-4ED Limited DC WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20160154223_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh HD Pentax-DA 20-40mm F2.8-4ED Limited DC WR.</description>
   <pubDate>01 Aug 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220801_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon GF35-70mm F4.5-5.6 WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20220236544_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon GF35-70mm F4.5-5.6 WR.</description>
   <pubDate>31 Jul 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220731_1300</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon GF20-35mm F4 R WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20220236544_Example10P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon GF20-35mm F4 R WR.</description>
   <pubDate>31 Jul 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220731_1200</guid>
  </item>
  <item>
   <title>New Lens: Schneider Variogon 1.8 / 8-40</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003442573_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Variogon 1.8 / 8-40.</description>
   <pubDate>28 Jul 2022 19:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220728_1900</guid>
  </item>
  <item>
   <title>New Lens: Schneider Variogon 2.8 / 10-40</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003057257_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Variogon 2.8 / 10-40.</description>
   <pubDate>28 Jul 2022 18:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220728_1800</guid>
  </item>
  <item>
   <title>New Lens: Schneider Video-Xenon T2.1 / 75</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE102012014955_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Video-Xenon T2.1 / 75.</description>
   <pubDate>28 Jul 2022 17:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220728_1700</guid>
  </item>
  <item>
   <title>New Lens: Schneider Variogon 2.8 / 45-100</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003482900_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Variogon 2.8 / 45-100.</description>
   <pubDate>28 Jul 2022 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220728_1600</guid>
  </item>
  <item>
   <title>New Lens: Schneider Cinegon 1.9 / 6.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE00927540_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Cinegon 1.9 / 6.5.</description>
   <pubDate>28 Jul 2022 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220728_1500</guid>
  </item>
  <item>
   <title>New Lens: Schneider Cine-Xenon 1.4 / 25</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003005379_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Cine-Xenon 1.4 / 25.</description>
   <pubDate>28 Jul 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220728_1400</guid>
  </item>
  <item>
   <title>New Lens: Schneider Cinegon 1.8 / 10</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003038379_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Cinegon 1.8 / 10.</description>
   <pubDate>28 Jul 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220728_1300</guid>
  </item>
  <item>
   <title>New Lens: Schneider Curtagon 4 / 28</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002824495_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Curtagon 4 / 28.</description>
   <pubDate>28 Jul 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220728_1200</guid>
  </item>
  <item>
   <title>New Lens: Schneider TV-Variogon 2.1-6.6 / 20-600</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003912373_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider TV-Variogon 2.1-6.6 / 20-600.</description>
   <pubDate>27 Jul 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220727_1200</guid>
  </item>
  <item>
   <title>New Lens: Leica APO-Summicron-M 35mm f/2 Asph</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20220066176_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica APO-Summicron-M 35mm f/2 Asph.</description>
   <pubDate>24 Jul 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220724_1400</guid>
  </item>
  <item>
   <title>New Lens: Mamiya 150mm f/4 Soft</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1977-141223_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Mamiya 150mm f/4 Soft.</description>
   <pubDate>24 Jul 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220724_1300</guid>
  </item>
  <item>
   <title>New Lens: Phase One Schneider Kreuznach 28mm LS f4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2006-300972_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Phase One Schneider Kreuznach 28mm LS f4.5.</description>
   <pubDate>24 Jul 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220724_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon Nikkor-SW 90mm f/4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004176915_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor-SW 90mm f/4.5.</description>
   <pubDate>22 Jul 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220722_1300</guid>
  </item>
  <item>
   <title>New Lens: Nikon Nikkor 300mm ED f/4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1976-043917_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor 300mm ED f/4.5.</description>
   <pubDate>22 Jul 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220722_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon RF5.2mm F2.8 L Dual Fisheye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20220221688_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF5.2mm F2.8 L Dual Fisheye.</description>
   <pubDate>18 Jul 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220718_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon RF100-400mm F5.6-8 IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20220214530_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF100-400mm F5.6-8 IS USM.</description>
   <pubDate>15 Jul 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220715_1300</guid>
  </item>
  <item>
   <title>New Lens: Cosina Voigtlander Ultron Vintage Line 28mm F2 Aspherical</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2022-100641_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Cosina Voigtlander Ultron Vintage Line 28mm F2 Aspherical.</description>
   <pubDate>15 Jul 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220715_1200</guid>
  </item>
  <item>
   <title>New Lens: Olympus 9-36mm f2-2.4 AF (E-10)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20030072086_Example07P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus 9-36mm f2-2.4 AF (E-10).</description>
   <pubDate>14 Jul 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220714_1300</guid>
  </item>
  <item>
   <title>New Lens: Olympus F.Zuiko 35mm f2.8 (XA)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004235521_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus F.Zuiko 35mm f2.8 (XA).</description>
   <pubDate>14 Jul 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220714_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon RF24mm F1.8 Macro IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20220019061_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF24mm F1.8 Macro IS STM.</description>
   <pubDate>12 Jul 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220712_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon EF85mm f1.8 USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1993-157964_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF85mm f1.8 USM.</description>
   <pubDate>05 Jul 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220705_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon AI Nikkor 24mm f/2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004163603_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI Nikkor 24mm f/2.</description>
   <pubDate>04 Jul 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220704_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon New FD50mm f1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1995-151965_ExampleMLP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon New FD50mm f1.4.</description>
   <pubDate>03 Jul 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220703_1200</guid>
  </item>
  <item>
   <title>New Lens: Olympus M.Zuiko Digital ED 8-25mm F4.0 Pro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2022-137385_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus M.Zuiko Digital ED 8-25mm F4.0 Pro.</description>
   <pubDate>30 Jun 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220630_1200</guid>
  </item>
  <item>
   <title>New Lens: Sigma 14mm F4 (dp0 Quattro)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2016-139087_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 14mm F4 (dp0 Quattro).</description>
   <pubDate>28 Jun 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220628_1200</guid>
  </item>
  <item>
   <title>New Lens: Leica DC Vario-Elmarit 4.5-108mm F2.8 (Panasonic FZ300)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150103211_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica DC Vario-Elmarit 4.5-108mm F2.8 (Panasonic FZ300).</description>
   <pubDate>27 Jun 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220627_1200</guid>
  </item>
  <item>
   <title>New Lens: Zeiss Vario-Sonnar T 9.0-72mm F2.8-4.5 (Sony DSC-RX100M6-7)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2019-188070_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Vario-Sonnar T 9.0-72mm F2.8-4.5 (Sony DSC-RX100M6-7).</description>
   <pubDate>26 Jun 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220626_1400</guid>
  </item>
  <item>
   <title>New Lens: Leica DC Vario-Summilux 10.9-34mm F1.7-2.8 ASPH (Panasonic LX100M2)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20160054550_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica DC Vario-Summilux 10.9-34mm F1.7-2.8 ASPH (Panasonic LX100M2).</description>
   <pubDate>26 Jun 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220626_1300</guid>
  </item>
  <item>
   <title>New Lens: Nikon Nikkor Z 100-400mm f/4.5-5.6 VR S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2022-092388_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z 100-400mm f/4.5-5.6 VR S.</description>
   <pubDate>26 Jun 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220626_1200</guid>
  </item>
  <item>
   <title>New Lens: Ricoh 18.3mm F2.8 (GR II)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20130321936_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh 18.3mm F2.8 (GR II).</description>
   <pubDate>16 Jun 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220616_1200</guid>
  </item>
  <item>
   <title>New Lens: Ricoh 18.3mm F2.8 (GR3)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20190154946_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh 18.3mm F2.8 (GR3).</description>
   <pubDate>15 Jun 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220615_1400</guid>
  </item>
  <item>
   <title>New Lens: Ricoh 28mm F2.8 (GR-1)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005760973_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh 28mm F2.8 (GR-1).</description>
   <pubDate>15 Jun 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220615_1300</guid>
  </item>
  <item>
   <title>New Lens: Ricoh 26.1mm F2.8 (GR3x)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20220026670_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh 26.1mm F2.8 (GR3x).</description>
   <pubDate>15 Jun 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220615_1200</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta AF 28mm F2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004258985_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 28mm F2.</description>
   <pubDate>14 Jun 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220614_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon RF16mm F2.8 STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2022-085382_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF16mm F2.8 STM.</description>
   <pubDate>08 Jun 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220608_1300</guid>
  </item>
  <item>
   <title>New Lens: Olympus Zuiko Auto-T 180mm F2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1984-176717_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus Zuiko Auto-T 180mm F2.</description>
   <pubDate>08 Jun 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220608_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon RF14-35mm F4 L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20220171174_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF14-35mm F4 L IS USM.</description>
   <pubDate>06 Jun 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220606_1200</guid>
  </item>
  <item>
   <title>New Lens: Sony FE 14mm F1.8 GM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2021-199923_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE 14mm F1.8 GM.</description>
   <pubDate>01 Jun 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220601_1200</guid>
  </item>
  <item>
   <title>New Lens: Sigma 24.2mm F2.8 (dp2x)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2010-101979_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 24.2mm F2.8 (dp2x).</description>
   <pubDate>27 May 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220527_1300</guid>
  </item>
  <item>
   <title>New Lens: Sigma 16.6mm F4 (dp1x)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2008-040033_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 16.6mm F4 (dp1x).</description>
   <pubDate>27 May 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220527_1200</guid>
  </item>
  <item>
   <title>New Lens: Sigma 30mm F2.8 (dp2 Merrill/Quattro)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2013-156459_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 30mm F2.8 (dp2 Merrill/Quattro).</description>
   <pubDate>26 May 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220526_1200</guid>
  </item>
  <item>
   <title>New Lens: Sigma 50mm F2.8 (dp3 Merrill/Quattro)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2014-126652_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 50mm F2.8 (dp3 Merrill/Quattro).</description>
   <pubDate>25 May 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220525_1200</guid>
  </item>
  <item>
   <title>New Lens: Arri Zeiss Master Prime T1.3 100mm</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20070236805_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Arri Zeiss Master Prime T1.3 100mm.</description>
   <pubDate>21 May 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220521_1400</guid>
  </item>
  <item>
   <title>New Lens: Panasonic Lumix S 70-300mm F4.5-5.6 Macro OIS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP7029611_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Lumix S 70-300mm F4.5-5.6 Macro OIS.</description>
   <pubDate>21 May 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220521_1300</guid>
  </item>
  <item>
   <title>New Lens: Sigma 35mm F1.4 DG DN Art</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2022-033487_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 35mm F1.4 DG DN Art.</description>
   <pubDate>21 May 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220521_1200</guid>
  </item>
  <item>
   <title>New Lens: Olympus Zuiko Auto-T 180mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1986-112115_ExampleML2P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus Zuiko Auto-T 180mm F2.8.</description>
   <pubDate>19 May 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220519_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon Nikkor Z MC 105mm f/2.8 VR S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2022-097401_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z MC 105mm f/2.8 VR S.</description>
   <pubDate>14 May 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220514_1200</guid>
  </item>
  <item>
   <title>New Lens: Ross Telecentric 305mm f6.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US001073950_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ross Telecentric 305mm f6.8.</description>
   <pubDate>08 May 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220508_1200</guid>
  </item>
  <item>
   <title>New Lens: Agfa Color Telinear 90mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002819651_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Agfa Color Telinear 90mm F4.</description>
   <pubDate>07 May 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220507_1300</guid>
  </item>
  <item>
   <title>New Lens: Agfa Solagon 50mm F2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002745315_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Agfa Solagon 50mm F2.</description>
   <pubDate>07 May 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220507_1200</guid>
  </item>
  <item>
   <title>New Lens: Rodenstock Apo-Sironar-W 150mm f5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE03907928_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Rodenstock Apo-Sironar-W 150mm f5.6.</description>
   <pubDate>06 May 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220506_1300</guid>
  </item>
  <item>
   <title>New Lens: Rodenstock Grandagon-N 75mm f6.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE02635415_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Rodenstock Grandagon-N 75mm f6.8.</description>
   <pubDate>06 May 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220506_1200</guid>
  </item>
  <item>
   <title>New Lens: Kinoptik Tegea 5.7mm f/1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003037426_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Kinoptik Tegea 5.7mm f/1.8.</description>
   <pubDate>04 May 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220504_1400</guid>
  </item>
  <item>
   <title>New Lens: Kinoptik Tegea 9.8mm f/1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003037426_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Kinoptik Tegea 9.8mm f/1.8.</description>
   <pubDate>04 May 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220504_1300</guid>
  </item>
  <item>
   <title>New Lens: Kinoptik Super-Tegea 1.9mm f/1.9 Fisheye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003037426_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Kinoptik Super-Tegea 1.9mm f/1.9 Fisheye.</description>
   <pubDate>04 May 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220504_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon TC-E2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2000-275517_Example01_Tale24.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon TC-E2.</description>
   <pubDate>20 Apr 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220420_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon WC-E63</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20010040736_Example02_Tale24.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon WC-E63.</description>
   <pubDate>19 Apr 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220419_1400</guid>
  </item>
  <item>
   <title>New Lens: Nikon FC-E8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1999-305119_Example06_Tale24.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon FC-E8.</description>
   <pubDate>19 Apr 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220419_1300</guid>
  </item>
  <item>
   <title>New Lens: Nikon TC-E3ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2001-174702_Example01_Tale24.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon TC-E3ED.</description>
   <pubDate>19 Apr 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220419_1200</guid>
  </item>
  <item>
   <title>New Lens: Olympus M.Zuiko Digital ED 150-400mm F4.5 TC1.25x IS Pro with TC</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2021-096331_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus M.Zuiko Digital ED 150-400mm F4.5 TC1.25x IS Pro with TC.</description>
   <pubDate>18 Apr 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220418_1300</guid>
  </item>
  <item>
   <title>New Lens: Olympus M.Zuiko Digital ED 150-400mm F4.5 TC1.25x IS Pro without TC</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2021-096331_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus M.Zuiko Digital ED 150-400mm F4.5 TC1.25x IS Pro without TC.</description>
   <pubDate>18 Apr 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220418_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF23mm F2 R WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20170351051_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF23mm F2 R WR.</description>
   <pubDate>13 Apr 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220413_1300</guid>
  </item>
  <item>
   <title>New Lens: Panasonic Leica DG Vario-Summilux 10-25mm F1.7 Asph</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200371325_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Leica DG Vario-Summilux 10-25mm F1.7 Asph.</description>
   <pubDate>13 Apr 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220413_1200</guid>
  </item>
  <item>
   <title>New Lens: Leica Summilux-TL 35mm F1.4 Asph</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/EP3029504_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Summilux-TL 35mm F1.4 Asph.</description>
   <pubDate>09 Apr 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220409_1200</guid>
  </item>
  <item>
   <title>New Lens: Leica Super-Vario-Elmar-TL 11-23mm F3.5-4.5 Asph</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2016-133764_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Super-Vario-Elmar-TL 11-23mm F3.5-4.5 Asph.</description>
   <pubDate>08 Apr 2022 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220408_1400</guid>
  </item>
  <item>
   <title>New Lens: Canon EF16-35mm f2.8L III USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2018-013685_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF16-35mm f2.8L III USM.</description>
   <pubDate>08 Apr 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220408_1300</guid>
  </item>
  <item>
   <title>New Lens: Nikon Nikkor Z 28mm f/2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2022-071249_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z 28mm f/2.8.</description>
   <pubDate>08 Apr 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220408_1200</guid>
  </item>
  <item>
   <title>New Lens: Zeiss Tessar f2.8 50mm</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/FR1066698_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Tessar f2.8 50mm.</description>
   <pubDate>16 Mar 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220316_1300</guid>
  </item>
  <item>
   <title>New Lens: Zeiss Distagon 60mm F5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CH321571_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Distagon 60mm F5.6.</description>
   <pubDate>16 Mar 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220316_1200</guid>
  </item>
  <item>
   <title>New Lens: Vivitar MC 28mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004333714_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Vivitar MC 28mm f2.8.</description>
   <pubDate>27 Feb 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220227_1200</guid>
  </item>
  <item>
   <title>New Lens: Vivitar 75-205mm f3.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB1383783_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Vivitar 75-205mm f3.8.</description>
   <pubDate>26 Feb 2022 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220226_1300</guid>
  </item>
  <item>
   <title>New Lens: Vivitar Series 1 135mm f2.3</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB1408910_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Vivitar Series 1 135mm f2.3.</description>
   <pubDate>26 Feb 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220226_1200</guid>
  </item>
  <item>
   <title>New Lens: Vivitar Series 1 35-85mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003975089_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Vivitar Series 1 35-85mm f2.8.</description>
   <pubDate>24 Feb 2022 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20220224_1200</guid>
  </item>
  <item>
   <title>New Lens: Cosina Super Wide-Heliar 15mm F4.5 Aspherical SL</title>
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   <title>New Lens: Konica Minolta Hexanon AR 135mm F3.5</title>
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   <title>New Lens: Konica Minolta Zoom-Hexanon AR 65-135mm F4</title>
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   <title>New Lens: Konica Minolta Zoom-Hexanon AR 35-70mm F3.5</title>
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   <title>New Lens: Konica Minolta Varifocal Hexanon AR 35-100mm F2.8</title>
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   <description>Konica Minolta Varifocal Hexanon AR 35-100mm F2.8.</description>
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   <title>New Lens: Konica Minolta Zoom-Hexanon AR 70-150mm F4</title>
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   <description>Konica Minolta Zoom-Hexanon AR 70-150mm F4.</description>
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   <title>New Lens: Konica Minolta UC Zoom-Hexanon AR 45-100mm F3.5</title>
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   <description>Konica Minolta UC Zoom-Hexanon AR 45-100mm F3.5.</description>
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   <title>New Lens: Sony FE 24mm F2.8 G</title>
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   <title>New Lens: Konica Minolta UC Hexanon AR 80-200mm F4</title>
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   <description>Konica Minolta UC Hexanon AR 80-200mm F4.</description>
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   <title>New Lens: Konica Minolta Hexar 38mm F2.8</title>
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   <description>Konica Minolta Hexar 38mm F2.8.</description>
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   <title>New Lens: Zeiss Hologon f8 15mm</title>
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   <description>Zeiss Hologon f8 15mm.</description>
   <pubDate>13 Feb 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Sonnar T f4 150mm</title>
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   <description>Zeiss Sonnar T f4 150mm.</description>
   <pubDate>13 Feb 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Sony Vario-Tessar T FE 16-35mm F4 ZA OSS</title>
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   <description>Sony Vario-Tessar T FE 16-35mm F4 ZA OSS.</description>
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   <title>New Lens: Konica Minolta 135mm F2.8 MD Tele Rokkor</title>
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   <description>Konica Minolta 135mm F2.8 MD Tele Rokkor.</description>
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   <title>New Lens: Konica Minolta AF 20mm F2.8</title>
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   <description>Konica Minolta AF 20mm F2.8.</description>
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   <description>Konica Minolta 28mm F2.8 MD v2.</description>
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   <title>New Lens: Konica Minolta 50mm F1.7 MD</title>
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   <description>Konica Minolta 50mm F1.7 MD.</description>
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   <title>New Lens: Konica Minolta 135mm F2.8 MD</title>
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   <description>Konica Minolta 24-50mm F4 MD Zoom.</description>
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   <description>Konica Minolta AF 28-70mm F2.8 G.</description>
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   <description>Konica Minolta AF 100-200mm F4.5.</description>
   <pubDate>07 Feb 2022 15:00:00 -0500</pubDate>
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   <description>Konica Minolta AF 28-135mm F4-4.5.</description>
   <pubDate>07 Feb 2022 14:00:00 -0500</pubDate>
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   <description>Konica Minolta 35-135mm F3.5-4.5 MD Zoom.</description>
   <pubDate>07 Feb 2022 13:00:00 -0500</pubDate>
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   <description>Konica Minolta AF 35-70mm F4.</description>
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   <pubDate>01 Feb 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Sonnar 40mm F2.8 Rollei</title>
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   <description>Zeiss Sonnar 40mm F2.8 Rollei.</description>
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   <title>New Lens: Konica Minolta Hexanon 40mm F1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1979-030821_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta Hexanon 40mm F1.8.</description>
   <pubDate>26 Jan 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta Hexanon 35mm F2.8</title>
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   <description>Konica Minolta Hexanon 35mm F2.8.</description>
   <pubDate>26 Jan 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Flektogon 20mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB0978797_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Flektogon 20mm F4.</description>
   <pubDate>26 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta Hexanon 50mm F1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1982-108817_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta Hexanon 50mm F1.8.</description>
   <pubDate>25 Jan 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta Hexanon 21mm F2.8</title>
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   <description>Konica Minolta Hexanon 21mm F2.8.</description>
   <pubDate>25 Jan 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Konica Minolta Hexanon 200mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1979-055424_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta Hexanon 200mm F4.</description>
   <pubDate>25 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Olympus Zuiko Auto-S 50mm F1.2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004099843_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus Zuiko Auto-S 50mm F1.2.</description>
   <pubDate>24 Jan 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Olympus Zuiko Auto-T 100mm F2</title>
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   <description>Olympus Zuiko Auto-T 100mm F2.</description>
   <pubDate>24 Jan 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Olympus Zuiko Auto-W 21mm F2</title>
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   <description>Olympus Zuiko Auto-W 21mm F2.</description>
   <pubDate>24 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh SMC Pentax-M 40mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004154509_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh SMC Pentax-M 40mm F2.8.</description>
   <pubDate>23 Jan 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Leica Elcan 50mm F2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003649104_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Elcan 50mm F2.</description>
   <pubDate>23 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Sony FE 12-24mm F2.8 GM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2021-200206_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE 12-24mm F2.8 GM.</description>
   <pubDate>22 Jan 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Yongnuo YN50mm F1.8S DA DSM</title>
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   <description>Yongnuo YN50mm F1.8S DA DSM.</description>
   <pubDate>22 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Leica Summilux C 40mm T1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008508864_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Summilux C 40mm T1.4.</description>
   <pubDate>17 Jan 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Leica PA-Curtagon-R 35mm F4</title>
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   <description>Leica PA-Curtagon-R 35mm F4.</description>
   <pubDate>17 Jan 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Sony FE C 16-35mm T3.1</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20190369371_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE C 16-35mm T3.1.</description>
   <pubDate>17 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Sony FE 28mm F2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US010191254_Example10P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE 28mm F2.</description>
   <pubDate>16 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Samyang AF 18mm F2.8 FE</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2021-246545_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samyang AF 18mm F2.8 FE.</description>
   <pubDate>15 Jan 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon XF18mm F1.4 R LM WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20220011542_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF18mm F1.4 R LM WR.</description>
   <pubDate>15 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Planar T f1.4 50mm</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003874771_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Planar T f1.4 50mm.</description>
   <pubDate>14 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Planar f1.4 55mm</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01170157_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Planar f1.4 55mm.</description>
   <pubDate>13 Jan 2022 15:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Distagon T f1.4 35mm Contax</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003915558_Example08P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Distagon T f1.4 35mm Contax.</description>
   <pubDate>13 Jan 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Distagon T f2 28mm Contax</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE02359156_Example12P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Distagon T f2 28mm Contax.</description>
   <pubDate>13 Jan 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Sony FE 70-200mm F4 G OSS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150226945_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE 70-200mm F4 G OSS.</description>
   <pubDate>13 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Distagon T f2.8 25mm Contax</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01250153_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Distagon T f2.8 25mm Contax.</description>
   <pubDate>12 Jan 2022 20:00:00 -0500</pubDate>
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   <title>New Lens: Leica Summilux-M 28mm F1.4 Asph</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20160070086_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Summilux-M 28mm F1.4 Asph.</description>
   <pubDate>12 Jan 2022 19:00:00 -0500</pubDate>
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   <title>New Lens: Sony FE 20mm F1.8 G</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2020-213337_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE 20mm F1.8 G.</description>
   <pubDate>12 Jan 2022 18:00:00 -0500</pubDate>
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   <title>New Lens: Olympus M.Zuiko ED 45mm F1.2 Pro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2019-023693_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus M.Zuiko ED 45mm F1.2 Pro.</description>
   <pubDate>12 Jan 2022 17:00:00 -0500</pubDate>
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   <title>New Lens: Phase One Schneider Kreuznach 120mm LS f4 Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2003-185916_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Phase One Schneider Kreuznach 120mm LS f4 Macro.</description>
   <pubDate>12 Jan 2022 16:00:00 -0500</pubDate>
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   <title>New Lens: Phase One Mamiya AF 55mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1997-297263_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Phase One Mamiya AF 55mm f2.8.</description>
   <pubDate>12 Jan 2022 15:00:00 -0500</pubDate>
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   <title>New Lens: Panasonic Leica DG Summilux 12mm F1.4 Asph</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2017-167327_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Leica DG Summilux 12mm F1.4 Asph.</description>
   <pubDate>12 Jan 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax 6x7 55mm f4</title>
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   <description>Ricoh smc Pentax 6x7 55mm f4.</description>
   <pubDate>12 Jan 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Olympus Zuiko Auto-Macro 38mm f2.8</title>
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   <description>Olympus Zuiko Auto-Macro 38mm f2.8.</description>
   <pubDate>12 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon GF110mm F2 R LM WR</title>
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   <description>Fujifilm Fujinon GF110mm F2 R LM WR.</description>
   <pubDate>11 Jan 2022 15:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon GF63mm F2.8 R WR</title>
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   <description>Fujifilm Fujinon GF63mm F2.8 R WR.</description>
   <pubDate>11 Jan 2022 14:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon XF50mm F2 R WR</title>
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   <description>Fujifilm Fujinon XF50mm F2 R WR.</description>
   <pubDate>11 Jan 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon GF120mm F4 R LM OIS WR Macro</title>
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   <description>Fujifilm Fujinon GF120mm F4 R LM OIS WR Macro.</description>
   <pubDate>11 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF-M32mm f1.4 STM</title>
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   <description>Canon EF-M32mm f1.4 STM.</description>
   <pubDate>10 Jan 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-FA J 75-300mm F4.5-5.8 AL</title>
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   <description>Ricoh smc Pentax-FA J 75-300mm F4.5-5.8 AL.</description>
   <pubDate>10 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S DX Nikkor 18-55mm f/3.5-5.6G VR II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150185495_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Nikkor 18-55mm f/3.5-5.6G VR II.</description>
   <pubDate>09 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Samyang AF 85mm F1.4 FE/F/RF</title>
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   <description>Samyang AF 85mm F1.4 FE/F/RF.</description>
   <pubDate>04 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Nikkor Z TC-1.4x</title>
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   <description>Nikon Nikkor Z TC-1.4x.</description>
   <pubDate>01 Jan 2022 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Nikkor Z TC-2.0x</title>
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   <description>Nikon Nikkor Z TC-2.0x.</description>
   <pubDate>01 Jan 2022 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Nikkor Z 40mm f/2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2021-189351_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z 40mm f/2.</description>
   <pubDate>31 Dec 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Nikkor Z 24-50mm f/4-6.3</title>
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   <description>Nikon Nikkor Z 24-50mm f/4-6.3.</description>
   <pubDate>31 Dec 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Venus Laowa 12mm f2.8 Zero-D</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN205720849_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Venus Laowa 12mm f2.8 Zero-D.</description>
   <pubDate>24 Dec 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Venus Laowa 15mm f4 Wide Angle Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN205427291_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Venus Laowa 15mm f4 Wide Angle Macro.</description>
   <pubDate>23 Dec 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Yongnuo YN40mm F2.8N</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN207216120_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Yongnuo YN40mm F2.8N.</description>
   <pubDate>23 Dec 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Sony E PZ 18-200 mm F3.5-6.3 OSS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20110286106_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony E PZ 18-200 mm F3.5-6.3 OSS.</description>
   <pubDate>22 Dec 2021 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20211222_1300</guid>
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   <title>New Lens: Canon TS-E50mm f2.8L Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US010571651_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon TS-E50mm f2.8L Macro.</description>
   <pubDate>22 Dec 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Leica Summilux-M 50mm F1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01045120_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Summilux-M 50mm F1.4.</description>
   <pubDate>21 Dec 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Leica Summicron-M 35mm F1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002975673_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Summicron-M 35mm F1.4.</description>
   <pubDate>21 Dec 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Viltrox AF 35mm F1.8 FE</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN211955963_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Viltrox AF 35mm F1.8 FE.</description>
   <pubDate>19 Dec 2021 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Viltrox AF 50mm F1.8 FE</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN211955966_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Viltrox AF 50mm F1.8 FE.</description>
   <pubDate>19 Dec 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Viltrox AF 23mm F1.4 E</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN211826700_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Viltrox AF 23mm F1.4 E.</description>
   <pubDate>18 Dec 2021 15:00:00 -0500</pubDate>
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   <title>New Lens: Viltrox AF 33mm F1.4 E</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN211826699_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Viltrox AF 33mm F1.4 E.</description>
   <pubDate>18 Dec 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Viltrox MF 20mm F1.8 FE</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN209606699_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Viltrox MF 20mm F1.8 FE.</description>
   <pubDate>18 Dec 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Viltrox AF 56mm F1.4 E</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN211955965_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Viltrox AF 56mm F1.4 E.</description>
   <pubDate>18 Dec 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Tamron 18-400mm F/3.5-6.3 Di II VC HLD</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2017-116646_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron 18-400mm F/3.5-6.3 Di II VC HLD.</description>
   <pubDate>16 Dec 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Nikkor Z 50mm f/1.2 S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2021-241230_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z 50mm f/1.2 S.</description>
   <pubDate>11 Dec 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-A 15mm F3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003864026_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-A 15mm F3.5.</description>
   <pubDate>05 Dec 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Panasonic Lumix S 20-60mm F3.5-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2021-179551_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Lumix S 20-60mm F3.5-5.6.</description>
   <pubDate>24 Nov 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 100-400mm F5-6.3 DG DN OS C</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2021-092636_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 100-400mm F5-6.3 DG DN OS C.</description>
   <pubDate>19 Nov 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 85mm F1.4 DG DN A</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2021-085935_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 85mm F1.4 DG DN A.</description>
   <pubDate>19 Nov 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF28-105mm f3.5-4.5 II USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2002-365547_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF28-105mm f3.5-4.5 II USM.</description>
   <pubDate>09 Nov 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF35-135mm f3.5-4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004690513_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF35-135mm f3.5-4.5.</description>
   <pubDate>09 Nov 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Mamiya 55mm f2.8N</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1979-107336_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Mamiya 55mm f2.8N.</description>
   <pubDate>07 Nov 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Vario-Sonnar T 3.5/70-210</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004303312_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Vario-Sonnar T 3.5/70-210.</description>
   <pubDate>02 Nov 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Planar 2.8/80</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002724994_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Planar 2.8/80.</description>
   <pubDate>02 Nov 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Planar 50mm F1.4 (Praktica)</title>
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   <description>Zeiss Planar 50mm F1.4 (Praktica).</description>
   <pubDate>02 Nov 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Sonnar Superachromat f5.6 250mm CFE</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003883229_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Sonnar Superachromat f5.6 250mm CFE.</description>
   <pubDate>01 Nov 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Distagon 4/35</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003038380_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Distagon 4/35.</description>
   <pubDate>01 Nov 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Sony E PZ 16-50mm F3.5-5.6 OSS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150316753_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony E PZ 16-50mm F3.5-5.6 OSS.</description>
   <pubDate>31 Oct 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Sony DT 18-55mm F3.5-5.6 SAM II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20090290227_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony DT 18-55mm F3.5-5.6 SAM II.</description>
   <pubDate>30 Oct 2021 16:00:00 -0500</pubDate>
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   <title>New Lens: Sony DT 16-50mm F2.8 SSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20120307129_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony DT 16-50mm F2.8 SSM.</description>
   <pubDate>30 Oct 2021 15:00:00 -0500</pubDate>
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   <title>New Lens: Sony Planar T* 50mm F1.4 ZA SSM</title>
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   <description>Sony Planar T* 50mm F1.4 ZA SSM.</description>
   <pubDate>30 Oct 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Sony DT 18-135mm F3.5-5.6 SAM</title>
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   <description>Sony DT 18-135mm F3.5-5.6 SAM.</description>
   <pubDate>30 Oct 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Sony FE 28-70mm F3.5-5.6 OSS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150077859_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE 28-70mm F3.5-5.6 OSS.</description>
   <pubDate>30 Oct 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Sony FE 90mm F2.8 Macro G OSS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2016-136352_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony FE 90mm F2.8 Macro G OSS.</description>
   <pubDate>29 Oct 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Canon FD20-35mm f3.5L Aspherical</title>
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   <description>Canon FD20-35mm f3.5L Aspherical.</description>
   <pubDate>29 Oct 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon FD300mm f4L</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004251133_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon FD300mm f4L.</description>
   <pubDate>28 Oct 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Canon FD300mm f5.6 SSC</title>
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   <description>Canon FD300mm f5.6 SSC.</description>
   <pubDate>28 Oct 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Canon FD28mm f2.8 SC</title>
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   <description>Canon FD28mm f2.8 SC.</description>
   <pubDate>28 Oct 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon FD85-300mm f4.5 SSC</title>
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   <description>Canon FD85-300mm f4.5 SSC.</description>
   <pubDate>27 Oct 2021 20:00:00 -0500</pubDate>
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   <title>New Lens: Canon Serenar 85mm f1.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002645973_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon Serenar 85mm f1.5.</description>
   <pubDate>27 Oct 2021 19:00:00 -0500</pubDate>
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   <title>New Lens: Canon Serenar 28mm f3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002645974_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon Serenar 28mm f3.5.</description>
   <pubDate>27 Oct 2021 18:00:00 -0500</pubDate>
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   <title>New Lens: Canon Serenar 35mm f3.2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002645975_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon Serenar 35mm f3.2.</description>
   <pubDate>27 Oct 2021 17:00:00 -0500</pubDate>
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   <title>New Lens: Canon Serenar 50mm f1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002681594_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon Serenar 50mm f1.8.</description>
   <pubDate>27 Oct 2021 16:00:00 -0500</pubDate>
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   <title>New Lens: Canon 35mm f1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002854890_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 35mm f1.8.</description>
   <pubDate>27 Oct 2021 15:00:00 -0500</pubDate>
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   <title>New Lens: Canon 28mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002779239_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 28mm f2.8.</description>
   <pubDate>27 Oct 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Canon FD35mm f2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003748022_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon FD35mm f2.</description>
   <pubDate>27 Oct 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Canon 50mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002838978_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon 50mm f2.8.</description>
   <pubDate>27 Oct 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF20mm f2.8 USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1996-110467_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF20mm f2.8 USM.</description>
   <pubDate>25 Oct 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF135mm f2.8 Soft Focus</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004826301_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF135mm f2.8 Soft Focus.</description>
   <pubDate>25 Oct 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF-S18-135mm f3.5-5.6 IS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2010-237453_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF-S18-135mm f3.5-5.6 IS.</description>
   <pubDate>23 Oct 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon FD500mm f4.5L</title>
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   <title>New Lens: Canon New FD300mm f2.8L</title>
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   <title>New Lens: Olympus MC-20 M.Zuiko Digital 2x Teleconverter</title>
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   <description>Olympus MC-20 M.Zuiko Digital 2x Teleconverter.</description>
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   <title>New Lens: Rodenstock Sironar-N 100mm f/5.6</title>
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   <description>Rodenstock Sironar-N 100mm f/5.6.</description>
   <pubDate>06 Sep 2021 18:00:00 -0500</pubDate>
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   <title>New Lens: Rodenstock Grandagon-N 90mm f5.6</title>
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   <description>Rodenstock Grandagon-N 90mm f5.6.</description>
   <pubDate>06 Sep 2021 17:00:00 -0500</pubDate>
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   <title>New Lens: Rodenstock Grandagon-N 75mm f5.6</title>
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   <description>Rodenstock Grandagon-N 75mm f5.6.</description>
   <pubDate>06 Sep 2021 16:00:00 -0500</pubDate>
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   <title>New Lens: Rodenstock Grandagon-N 65mm f5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE02444954_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Rodenstock Grandagon-N 65mm f5.6.</description>
   <pubDate>06 Sep 2021 15:00:00 -0500</pubDate>
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   <title>New Lens: Rodenstock Geronar 210mm f6.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE02818394_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Rodenstock Geronar 210mm f6.8.</description>
   <pubDate>06 Sep 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Rodenstock Geronar-WA 90mm f8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE03026282_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Rodenstock Geronar-WA 90mm f8.</description>
   <pubDate>06 Sep 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Angenieux 28mm f3.5 R11</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB0720808_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Angenieux 28mm f3.5 R11.</description>
   <pubDate>06 Sep 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Hasselblad XCD 2.8 65</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200319427_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Hasselblad XCD 2.8 65.</description>
   <pubDate>04 Sep 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Hasselblad XCD 3.5 45</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2017-221949_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Hasselblad XCD 3.5 45.</description>
   <pubDate>04 Sep 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Hasselblad HC 3.5 35 (Fujinon)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20040136095_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Hasselblad HC 3.5 35 (Fujinon).</description>
   <pubDate>03 Sep 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Canon RF50mm F1.8 STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20210263286_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF50mm F1.8 STM.</description>
   <pubDate>03 Sep 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon XF50mm F1.0 R WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20210231927_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF50mm F1.0 R WR.</description>
   <pubDate>03 Sep 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-FA 35mm F2 AL</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006384987_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 35mm F2 AL.</description>
   <pubDate>02 Sep 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax 6x7 120mm f3.5 Soft</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004948236_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax 6x7 120mm f3.5 Soft.</description>
   <pubDate>02 Sep 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh Pentax-A 35-70mm f4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004792215_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh Pentax-A 35-70mm f4.</description>
   <pubDate>02 Sep 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh Pentax Super-Takumar 28mm f3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003506339_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh Pentax Super-Takumar 28mm f3.5.</description>
   <pubDate>01 Sep 2021 18:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh SMC Pentax 645 A 45mm f2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004487485_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh SMC Pentax 645 A 45mm f2.8.</description>
   <pubDate>01 Sep 2021 17:00:00 -0500</pubDate>
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   <title>New Lens: Leica Macro-Elmar-M 90mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE02246966_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Macro-Elmar-M 90mm F4.</description>
   <pubDate>01 Sep 2021 16:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh Pentax Super-Takumar 35mm f2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003506336_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh Pentax Super-Takumar 35mm f2.</description>
   <pubDate>01 Sep 2021 15:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh SMCT Pentax 6x7 300mm f4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003467462_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh SMCT Pentax 6x7 300mm f4.</description>
   <pubDate>01 Sep 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh SMC Pentax 6x7 600mm f4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003502393_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh SMC Pentax 6x7 600mm f4.</description>
   <pubDate>01 Sep 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh Pentax Super-Takumar 300mm f4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003502394_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh Pentax Super-Takumar 300mm f4.</description>
   <pubDate>01 Sep 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Leica Elmarit-R 28mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003740120_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Elmarit-R 28mm F2.8.</description>
   <pubDate>31 Aug 2021 19:00:00 -0500</pubDate>
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   <title>New Lens: Leica Macro-Elmarit-R 60mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003552833_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Macro-Elmarit-R 60mm F2.8.</description>
   <pubDate>31 Aug 2021 18:00:00 -0500</pubDate>
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   <title>New Lens: Leica Summilux 35mm F1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/FR1233449_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Summilux 35mm F1.4.</description>
   <pubDate>31 Aug 2021 17:00:00 -0500</pubDate>
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   <title>New Lens: Leica Summilux 50mm F1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003291553_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Summilux 50mm F1.4.</description>
   <pubDate>31 Aug 2021 16:00:00 -0500</pubDate>
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   <title>New Lens: Leica Elmarit 90mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US002995980_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Elmarit 90mm F2.8.</description>
   <pubDate>31 Aug 2021 15:00:00 -0500</pubDate>
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   <title>New Lens: Leica Telyt 200mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE01096057_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Telyt 200mm F4.</description>
   <pubDate>31 Aug 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Leica Summicron-C 40mm F2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE02222892_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Leica Summicron-C 40mm F2.</description>
   <pubDate>31 Aug 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Leica Elmarit-R 35mm F2.8</title>
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   <description>Leica Elmarit-R 35mm F2.8.</description>
   <pubDate>31 Aug 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Olympus 1000mm f11 E Zuiko Auto-T</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE02206106_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus 1000mm f11 E Zuiko Auto-T.</description>
   <pubDate>30 Aug 2021 22:00:00 -0500</pubDate>
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   <title>New Lens: Olympus 50mm f3.5 Zuiko Auto-Macro</title>
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   <description>Olympus 50mm f3.5 Zuiko Auto-Macro.</description>
   <pubDate>30 Aug 2021 21:00:00 -0500</pubDate>
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   <title>New Lens: Olympus 8mm f2.8 Zuiko Auto-Fisheye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE02157160_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus 8mm f2.8 Zuiko Auto-Fisheye.</description>
   <pubDate>30 Aug 2021 20:00:00 -0500</pubDate>
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   <title>New Lens: Olympus 300mm f4.5 F Zuiko Auto-T</title>
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   <description>Olympus 300mm f4.5 F Zuiko Auto-T.</description>
   <pubDate>30 Aug 2021 19:00:00 -0500</pubDate>
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   <title>New Lens: Olympus 600mm f6.5 F Zuiko Auto-T</title>
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   <description>Olympus 600mm f6.5 F Zuiko Auto-T.</description>
   <pubDate>30 Aug 2021 18:00:00 -0500</pubDate>
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   <title>New Lens: Olympus 24mm f2 J Zuiko Auto-W</title>
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   <description>Olympus 24mm f2 J Zuiko Auto-W.</description>
   <pubDate>30 Aug 2021 17:00:00 -0500</pubDate>
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   <title>New Lens: Olympus 135mm f3.5 E Zuiko Auto-T</title>
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   <description>Olympus 135mm f3.5 E Zuiko Auto-T.</description>
   <pubDate>30 Aug 2021 16:00:00 -0500</pubDate>
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   <title>New Lens: Olympus 400mm f6.3 E Zuiko Auto-T</title>
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   <description>Olympus 400mm f6.3 E Zuiko Auto-T.</description>
   <pubDate>30 Aug 2021 15:00:00 -0500</pubDate>
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   <title>New Lens: Olympus 21mm f3.5 G Zuiko Auto-W</title>
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   <description>Olympus 21mm f3.5 G Zuiko Auto-W.</description>
   <pubDate>30 Aug 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Olympus 24mm f2.8 I Zuiko Auto-W</title>
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   <description>Olympus 24mm f2.8 I Zuiko Auto-W.</description>
   <pubDate>30 Aug 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Olympus 18mm f3.5 Zuiko MC Auto-W</title>
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   <description>Olympus 18mm f3.5 Zuiko MC Auto-W.</description>
   <pubDate>30 Aug 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Olympus 28mm f3.5 G Zuiko Auto-W</title>
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   <description>Olympus 28mm f3.5 G Zuiko Auto-W.</description>
   <pubDate>29 Aug 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Panasonic Lumix G Vario 12-32mm F3.5-5.6 Asph Mega OIS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150097989_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Lumix G Vario 12-32mm F3.5-5.6 Asph Mega OIS.</description>
   <pubDate>28 Aug 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Olympus 75-150mm f4 Zuiko Auto-Zoom</title>
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   <description>Olympus 75-150mm f4 Zuiko Auto-Zoom.</description>
   <pubDate>28 Aug 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Panasonic Lumix G 25mm F1.7 Asph</title>
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   <description>Panasonic Lumix G 25mm F1.7 Asph.</description>
   <pubDate>27 Aug 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Panasonic Leica DG Vario-Elmar 100-400mm F4.0-6.3 Asph Power OIS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180284478_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Leica DG Vario-Elmar 100-400mm F4.0-6.3 Asph Power OIS.</description>
   <pubDate>27 Aug 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Panasonic Lumix G Vario 12-60mm F3.5-5.6 Asph Power OIS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20170242227_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Lumix G Vario 12-60mm F3.5-5.6 Asph Power OIS.</description>
   <pubDate>27 Aug 2021 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Fujifilm Fujinon GF50mm F3.5 R LM WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200166730_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon GF50mm F3.5 R LM WR.</description>
   <pubDate>26 Aug 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210826_1200</guid>
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  <item>
   <title>New Lens: Schneider Super-Angulon 8 / 90</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE00975637_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Super-Angulon 8 / 90.</description>
   <pubDate>25 Aug 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210825_1200</guid>
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  <item>
   <title>New Chapter: Determining the Angle of View</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_08.htm</link>
   <description>Determining the Angle of View.</description>
   <pubDate>25 Aug 2021 01:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210825_0100</guid>
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  <item>
   <title>New Lens: Schneider Super-Symmar XL 5.6 / 110 Asph</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005870234_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Super-Symmar XL 5.6 / 110 Asph.</description>
   <pubDate>24 Aug 2021 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Schneider APO-Symmar 5.6 / 100</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006028720_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider APO-Symmar 5.6 / 100.</description>
   <pubDate>23 Aug 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210823_1200</guid>
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  <item>
   <title>New Lens: Schneider Xenar 2.8 / 50</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE00753329_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Schneider Xenar 2.8 / 50.</description>
   <pubDate>21 Aug 2021 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Konica Minolta 24-35mm F3.5 MD Zoom</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1981-158314_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta 24-35mm F3.5 MD Zoom.</description>
   <pubDate>16 Aug 2021 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Fujifilm Fujinon GF30mm F3.5 R WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20210231930_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon GF30mm F3.5 R WR.</description>
   <pubDate>02 Aug 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210802_1200</guid>
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   <title>New Lens: Canon TS-E135mm f4L Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2018-132674_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon TS-E135mm f4L Macro.</description>
   <pubDate>23 Jul 2021 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon EF-M28mm f3.5 Macro IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20160313535_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF-M28mm f3.5 Macro IS STM.</description>
   <pubDate>23 Jul 2021 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon TS-E90mm f2.8L Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2018-205474_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon TS-E90mm f2.8L Macro.</description>
   <pubDate>23 Jul 2021 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon 1 Nikkor VR 10-30mm f/3.5-5.6 PD-Zoom</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180196240_Example11P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon 1 Nikkor VR 10-30mm f/3.5-5.6 PD-Zoom.</description>
   <pubDate>22 Jul 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210722_1200</guid>
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  <item>
   <title>New Lens: Sigma 24-70mm F2.8 DG OS HSM A</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2017-156719_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 24-70mm F2.8 DG OS HSM A.</description>
   <pubDate>17 Jul 2021 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210717_1400</guid>
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  <item>
   <title>New Lens: Sigma 85mm F1.4 DG HSM A</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2018-005099_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 85mm F1.4 DG HSM A.</description>
   <pubDate>17 Jul 2021 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210717_1300</guid>
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  <item>
   <title>New Lens: Sigma 60mm F2.8 DN A</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2014-145954_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 60mm F2.8 DN A.</description>
   <pubDate>17 Jul 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210717_1200</guid>
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  <item>
   <title>New Lens: Sigma 50-200mm F4-5.6 DC OS HSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2010-152247_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 50-200mm F4-5.6 DC OS HSM.</description>
   <pubDate>16 Jul 2021 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210716_1500</guid>
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  <item>
   <title>New Lens: Sigma APO 50-500mm F4-6.3 EX DG HSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2001-108902_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma APO 50-500mm F4-6.3 EX DG HSM.</description>
   <pubDate>16 Jul 2021 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210716_1400</guid>
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  <item>
   <title>New Lens: Sigma 12-24mm F4.5-5.6 EX DG Ashperical HSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2005-106878_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 12-24mm F4.5-5.6 EX DG Ashperical HSM.</description>
   <pubDate>16 Jul 2021 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210716_1300</guid>
  </item>
  <item>
   <title>New Lens: Sigma 8-16mm F4.5-5.6 DC HSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2011-227124_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 8-16mm F4.5-5.6 DC HSM.</description>
   <pubDate>16 Jul 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210716_1200</guid>
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  <item>
   <title>New Lens: Sigma APO Macro 180mm F3.5 EX DG IF HSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2001-033704_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma APO Macro 180mm F3.5 EX DG IF HSM.</description>
   <pubDate>13 Jul 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210713_1200</guid>
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  <item>
   <title>New Lens: Tamron SP AF70-200mm F2.8 Di</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20080212200_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron SP AF70-200mm F2.8 Di.</description>
   <pubDate>12 Jul 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210712_1200</guid>
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  <item>
   <title>New Lens: Fujifilm Fujinon XF80mm F2.8 R LM OIS WR Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180246292_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF80mm F2.8 R LM OIS WR Macro.</description>
   <pubDate>10 Jul 2021 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210710_1400</guid>
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  <item>
   <title>New Lens: Ricoh smc Pentax-DA 14mm F2.8ED[IF]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20050237627_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-DA 14mm F2.8ED[IF].</description>
   <pubDate>10 Jul 2021 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Ricoh HD Pentax-D FA 28-105mm F3.5-5.6ED DC WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20170068075_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh HD Pentax-D FA 28-105mm F3.5-5.6ED DC WR.</description>
   <pubDate>10 Jul 2021 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Ricoh HD Pentax-D FA 70-200mm F2.8ED DC AW</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20160103303_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh HD Pentax-D FA 70-200mm F2.8ED DC AW.</description>
   <pubDate>09 Jul 2021 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210709_1500</guid>
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  <item>
   <title>New Lens: Ricoh HD Pentax-D FA645 90mm F2.8 ED AW SR Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20130222925_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh HD Pentax-D FA645 90mm F2.8 ED AW SR Macro.</description>
   <pubDate>09 Jul 2021 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Ricoh smc Pentax-Q 06 Telephoto Zoom 15-45mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150241657_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-Q 06 Telephoto Zoom 15-45mm F2.8.</description>
   <pubDate>09 Jul 2021 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Ricoh smc Pentax-DA 18-135mm F3.5-5.6ED AL[IF] DC WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20120002298_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-DA 18-135mm F3.5-5.6ED AL[IF] DC WR.</description>
   <pubDate>09 Jul 2021 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Ricoh HD Pentax-DA 16-85mm F3.5-5.6ED DC WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2016-114800_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh HD Pentax-DA 16-85mm F3.5-5.6ED DC WR.</description>
   <pubDate>08 Jul 2021 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210708_1500</guid>
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  <item>
   <title>New Lens: Ricoh HD Pentax-DA 18-50mm F4.0-5.6 DC WR RE</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2016-006455_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh HD Pentax-DA 18-50mm F4.0-5.6 DC WR RE.</description>
   <pubDate>08 Jul 2021 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Tamron 70-180mm F/2.8 Di III VXD</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2021-043375_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron 70-180mm F/2.8 Di III VXD.</description>
   <pubDate>08 Jul 2021 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Ricoh HD Pentax-DA 55-300mm F4.5-6.3ED PLM WR RE</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20170329112_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh HD Pentax-DA 55-300mm F4.5-6.3ED PLM WR RE.</description>
   <pubDate>08 Jul 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S DX Nikkor 55-300mm f/4.5-5.6G ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20110102905_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Nikkor 55-300mm f/4.5-5.6G ED VR.</description>
   <pubDate>06 Jul 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210706_1200</guid>
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   <title>New Lens: Sigma 24mm F1.8 EX DG Aspherical Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2001-330771_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 24mm F1.8 EX DG Aspherical Macro.</description>
   <pubDate>05 Jul 2021 18:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 28mm F1.8 EX DG Aspherical Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2001-330771_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 28mm F1.8 EX DG Aspherical Macro.</description>
   <pubDate>05 Jul 2021 17:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Sigma Macro 105mm F2.8 EX DG OS HSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2012-058682_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma Macro 105mm F2.8 EX DG OS HSM.</description>
   <pubDate>05 Jul 2021 16:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 70-300mm F4-5.6 DG OS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2010-217838_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 70-300mm F4-5.6 DG OS.</description>
   <pubDate>05 Jul 2021 15:00:00 -0500</pubDate>
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   <title>New Lens: Sigma Macro 70mm F2.8 EX DG</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2008-020656_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma Macro 70mm F2.8 EX DG.</description>
   <pubDate>05 Jul 2021 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Sigma APO Macro 150mm F2.8 EX DG OS HSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2012-063403_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma APO Macro 150mm F2.8 EX DG OS HSM.</description>
   <pubDate>05 Jul 2021 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Sigma APO 300-800mm F5.6 EX DG HSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2004-085846_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma APO 300-800mm F5.6 EX DG HSM.</description>
   <pubDate>05 Jul 2021 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon Nikkor Z 14-24mm f/2.8 S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2021-117563_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z 14-24mm f/2.8 S.</description>
   <pubDate>25 Jun 2021 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon AF Nikkor 85mm f/1.4D IF</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005640277_Example01_Tale41.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Nikkor 85mm f/1.4D IF.</description>
   <pubDate>21 Jun 2021 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon AF Nikkor 85mm f/1.4D IF</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005640277_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Nikkor 85mm f/1.4D IF.</description>
   <pubDate>21 Jun 2021 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon EF135mm f2L USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2018-049102_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF135mm f2L USM.</description>
   <pubDate>20 Jun 2021 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210620_1300</guid>
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  <item>
   <title>New Lens: Nikon AF-S Zoom-Nikkor 200-400mm f4G IF-ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20050157403_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Zoom-Nikkor 200-400mm f4G IF-ED VR.</description>
   <pubDate>20 Jun 2021 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon EF50mm F1.4 USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1994-242370_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF50mm F1.4 USM.</description>
   <pubDate>15 Jun 2021 13:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Canon FD24mm f1.4 SSC Aspherical</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003992085_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon FD24mm f1.4 SSC Aspherical.</description>
   <pubDate>15 Jun 2021 12:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Chapter: Rectilinear Projection Lenses</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_24.htm</link>
   <description>Rectilinear Projection Lenses.</description>
   <pubDate>15 Jun 2021 02:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210615_0200</guid>
  </item>
  <item>
   <title>New Chapter: Fisheye Projection Lenses</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_25.htm</link>
   <description>Fisheye Projection Lenses.</description>
   <pubDate>15 Jun 2021 01:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210615_0100</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-DA 50mm F1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2014-026184_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-DA 50mm F1.8.</description>
   <pubDate>14 Jun 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210614_1200</guid>
  </item>
  <item>
   <title>New Chapter: Projection Classification</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_23.htm</link>
   <description>Projection Classification.</description>
   <pubDate>13 Jun 2021 01:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210613_0100</guid>
  </item>
  <item>
   <title>New Chapter: Light Throughput with a Close-up Lens</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_22.htm</link>
   <description>Light Throughput with a Close-up Lens.</description>
   <pubDate>12 Jun 2021 01:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210612_0100</guid>
  </item>
  <item>
   <title>New Lens: Sigma 15mm F2.8 EX DG Diagonal Fisheye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1990-248910_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 15mm F2.8 EX DG Diagonal Fisheye.</description>
   <pubDate>07 Jun 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210607_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon EF15mm f2.8 Fisheye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1988-017421_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF15mm f2.8 Fisheye.</description>
   <pubDate>05 Jun 2021 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210605_1400</guid>
  </item>
  <item>
   <title>New Lens: Sigma 8mm F3.5 EX DG Circular Fisheye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2008-003108_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 8mm F3.5 EX DG Circular Fisheye.</description>
   <pubDate>05 Jun 2021 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210605_1300</guid>
  </item>
  <item>
   <title>New Lens: Olympus OM Zuiko 8mm f2.8 Circular Fisheye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003741630_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus OM Zuiko 8mm f2.8 Circular Fisheye.</description>
   <pubDate>05 Jun 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210605_1200</guid>
  </item>
  <item>
   <title>New Lens: Sony Vario-Sonnar T DT 16-80mm F3.5-4.5 ZA</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20070229969_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony Vario-Sonnar T DT 16-80mm F3.5-4.5 ZA.</description>
   <pubDate>30 May 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210530_1200</guid>
  </item>
  <item>
   <title>New Lens: Panasonic Lumix S Pro 70-200mm F2.8 OIS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20210132345_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Lumix S Pro 70-200mm F2.8 OIS.</description>
   <pubDate>25 May 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210525_1200</guid>
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  <item>
   <title>New Lens: Konica Minolta 28-85mm F3.5-4.5 MD Zoom</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1989-193709_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta 28-85mm F3.5-4.5 MD Zoom.</description>
   <pubDate>24 May 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210524_1200</guid>
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  <item>
   <title>New Lens: Konica Minolta 85mm F2.8 VariSoft</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004124276_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta 85mm F2.8 VariSoft.</description>
   <pubDate>23 May 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210523_1200</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta 28mm F2.8 MD</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003973832_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta 28mm F2.8 MD.</description>
   <pubDate>22 May 2021 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210522_1300</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta 35mm F2.8 MD</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003936153_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta 35mm F2.8 MD.</description>
   <pubDate>22 May 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210522_1200</guid>
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  <item>
   <title>New Lens: Konica Minolta AF 80-200mm F4.5-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1989-223410_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 80-200mm F4.5-5.6.</description>
   <pubDate>20 May 2021 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210520_1500</guid>
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  <item>
   <title>New Lens: Konica Minolta AF 70-210mm F3.5-4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1989-223409_Example07P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 70-210mm F3.5-4.5.</description>
   <pubDate>20 May 2021 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210520_1400</guid>
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  <item>
   <title>New Lens: Konica Minolta AF 75-300mm F4.5-5.6 D</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005633759_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 75-300mm F4.5-5.6 D.</description>
   <pubDate>20 May 2021 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210520_1300</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta AF 100-400mm F4.5-6.7 APO</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005633759_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 100-400mm F4.5-6.7 APO.</description>
   <pubDate>20 May 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210520_1200</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta AF 3x-1x 1.7-2.8 Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1988-070818_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 3x-1x 1.7-2.8 Macro.</description>
   <pubDate>19 May 2021 20:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210519_2000</guid>
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  <item>
   <title>New Lens: Konica Minolta AF 24-85mm F3.5-4.5 RS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005528423_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 24-85mm F3.5-4.5 RS.</description>
   <pubDate>19 May 2021 19:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210519_1900</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta AF 85mm F1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1987-244010_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 85mm F1.4.</description>
   <pubDate>19 May 2021 18:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210519_1800</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta AF 24-105mm F3.5-4.5 D</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2000-187161_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 24-105mm F3.5-4.5 D.</description>
   <pubDate>19 May 2021 17:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210519_1700</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta AF 35mm F2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1988-201614_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 35mm F2.</description>
   <pubDate>19 May 2021 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210519_1600</guid>
  </item>
  <item>
   <title>New Lens: Sony Vario-Sonnar T 24-70mm F2.8 ZA SSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20080198475_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony Vario-Sonnar T 24-70mm F2.8 ZA SSM.</description>
   <pubDate>19 May 2021 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210519_1500</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta AF 70-200mm F2.8 APO G D SSM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2004-109559_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 70-200mm F2.8 APO G D SSM.</description>
   <pubDate>19 May 2021 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210519_1400</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta AF 100mm F2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1987-244010_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 100mm F2.</description>
   <pubDate>19 May 2021 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210519_1300</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta AF 80-200mm F2.8 APO</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1989-039542_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 80-200mm F2.8 APO.</description>
   <pubDate>19 May 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210519_1200</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta 135mm F2.8 T4.5 STF</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1999-231209_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta 135mm F2.8 T4.5 STF.</description>
   <pubDate>18 May 2021 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210518_1500</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta AF 200mm F2.8 APO</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004786152_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 200mm F2.8 APO.</description>
   <pubDate>18 May 2021 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210518_1400</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta AF 100mm F2.8 Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004764000_Example08P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 100mm F2.8 Macro.</description>
   <pubDate>18 May 2021 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210518_1300</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta AF 35mm F1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004806003_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 35mm F1.4.</description>
   <pubDate>18 May 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210518_1200</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta 45mm F2 MD Rokkor</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004277149_Example07P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta 45mm F2 MD Rokkor.</description>
   <pubDate>17 May 2021 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210517_1300</guid>
  </item>
  <item>
   <title>New Lens: Konica Minolta AF 16mm F2.8 FishEye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003589798_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Konica Minolta AF 16mm F2.8 FishEye.</description>
   <pubDate>17 May 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210517_1200</guid>
  </item>
  <item>
   <title>New Lens: Zhong Yi SpeedMaster 50mm F0.95 M</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN111965793_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zhong Yi SpeedMaster 50mm F0.95 M.</description>
   <pubDate>14 May 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210514_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon AF-S DX Zoom-Nikkor 18-55mm f/3.5-5.6G ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20060007559_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Zoom-Nikkor 18-55mm f/3.5-5.6G ED.</description>
   <pubDate>13 May 2021 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210513_1300</guid>
  </item>
  <item>
   <title>New Lens: Olympus Zuiko Auto-Macro 90mm F2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004792219_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus Zuiko Auto-Macro 90mm F2.</description>
   <pubDate>13 May 2021 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Zhong Yi SpeedMaster 135mm F1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN107255857_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zhong Yi SpeedMaster 135mm F1.4.</description>
   <pubDate>12 May 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210512_1200</guid>
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  <item>
   <title>New Lens: TH Swiss Irix 150mm f/2.8 Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2020-119907_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>TH Swiss Irix 150mm f/2.8 Macro.</description>
   <pubDate>10 May 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210510_1200</guid>
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  <item>
   <title>New Lens: Sony E 50mm F1.8 OSS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2012-242690_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony E 50mm F1.8 OSS.</description>
   <pubDate>08 May 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210508_1200</guid>
  </item>
  <item>
   <title>New Lens: Venus Laowa 10-18mm f4.5-5.6 Zoom</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN108535851_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Venus Laowa 10-18mm f4.5-5.6 Zoom.</description>
   <pubDate>07 May 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210507_1200</guid>
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  <item>
   <title>New Lens: Venus Laowa 24mm f14 2X Macro Probe</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN210573001_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Venus Laowa 24mm f14 2X Macro Probe.</description>
   <pubDate>06 May 2021 14:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Venus Laowa 65mm f2.8 2x Ultra Macro APO</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN110161666_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Venus Laowa 65mm f2.8 2x Ultra Macro APO.</description>
   <pubDate>06 May 2021 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Venus Laowa 15mm f2 Zero-D</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180149842_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Venus Laowa 15mm f2 Zero-D.</description>
   <pubDate>06 May 2021 12:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Nikon AF Nikkor 18mm f/2.8D</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2021-039813_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Nikkor 18mm f/2.8D.</description>
   <pubDate>04 May 2021 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210504_1300</guid>
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  <item>
   <title>New Lens: Nikon AF-P DX Nikkor 10-20mm f/4.5-5.6G VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2021-039813_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-P DX Nikkor 10-20mm f/4.5-5.6G VR.</description>
   <pubDate>04 May 2021 12:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Panasonic Leica DG Vario-Elmarit 12-60mm F2.8-4.0 Asph Power OIS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20190312999_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Leica DG Vario-Elmarit 12-60mm F2.8-4.0 Asph Power OIS.</description>
   <pubDate>02 May 2021 15:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Sony E 10-18 mm F4 OSS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2014-007298_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony E 10-18 mm F4 OSS.</description>
   <pubDate>02 May 2021 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Sony 2x Teleconverter Lens (SEL)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2017-134928_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony 2x Teleconverter Lens (SEL).</description>
   <pubDate>02 May 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Sony 1.4x Teleconverter Lens (SEL)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2017-134928_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sony 1.4x Teleconverter Lens (SEL).</description>
   <pubDate>02 May 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF-M55-200mm f4.5-6.3 IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2017-161933_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF-M55-200mm f4.5-6.3 IS STM.</description>
   <pubDate>01 May 2021 17:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon 1 Nikkor 32mm f/1.2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2014-061226_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon 1 Nikkor 32mm f/1.2.</description>
   <pubDate>01 May 2021 16:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S DX Micro Nikkor 40mm f/2.8G</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20110176215_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Micro Nikkor 40mm f/2.8G.</description>
   <pubDate>01 May 2021 15:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF-M18-150mm f3.5-6.3 IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180074300_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF-M18-150mm f3.5-6.3 IS STM.</description>
   <pubDate>01 May 2021 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon EF-S35mm f2.8 Macro IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180074300_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF-S35mm f2.8 Macro IS STM.</description>
   <pubDate>01 May 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Panasonic Leica DG Vario-Elmarit 8-18mm F2.8-4.0 Asph</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2018-180348_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Leica DG Vario-Elmarit 8-18mm F2.8-4.0 Asph.</description>
   <pubDate>01 May 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon 1 Nikkor 10mm f/2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2011-248340_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon 1 Nikkor 10mm f/2.8.</description>
   <pubDate>30 Apr 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S DX Nikkor 55-200mm f/4-5.6G ED VR II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2015-141574_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Nikkor 55-200mm f/4-5.6G ED VR II.</description>
   <pubDate>30 Apr 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S DX Zoom-Nikkor 55-200mm f/4-5.6G ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20060245079_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Zoom-Nikkor 55-200mm f/4-5.6G ED.</description>
   <pubDate>30 Apr 2021 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon AF Zoom-Nikkor 24-85mm f/2.8-4D IF</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2000-321497_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Zoom-Nikkor 24-85mm f/2.8-4D IF.</description>
   <pubDate>27 Apr 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Nikkor 50mm f/1.4G</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2015-041003_Example01MLP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 50mm f/1.4G.</description>
   <pubDate>26 Apr 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon 1 Nikkor VR 10-30mm f/3.5-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20120019926_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon 1 Nikkor VR 10-30mm f/3.5-5.6.</description>
   <pubDate>25 Apr 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S DX Micro Nikkor 85mm f/3.5G ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20090190220_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Micro Nikkor 85mm f/3.5G ED VR.</description>
   <pubDate>24 Apr 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Olympus M.Zuiko ED 12-45mm F4.0 Pro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2021-070285_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus M.Zuiko ED 12-45mm F4.0 Pro.</description>
   <pubDate>24 Apr 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh Pentax Ultra-Achromatic-Takumar 85mm F4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003490825_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh Pentax Ultra-Achromatic-Takumar 85mm F4.5.</description>
   <pubDate>24 Apr 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon XF23mm F1.4 R</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20140368926_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF23mm F1.4 R.</description>
   <pubDate>13 Apr 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon XF90mm F2 R LM WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20160274335_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF90mm F2 R LM WR.</description>
   <pubDate>12 Apr 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon XF35mm F2 R WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20170010441_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF35mm F2 R WR.</description>
   <pubDate>12 Apr 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF Nikkor 35mm f/2D</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2021-036283_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Nikkor 35mm f/2D.</description>
   <pubDate>11 Apr 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S DX Nikkor 18-300mm f/3.5-5.6G ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20210103133_Example07P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Nikkor 18-300mm f/3.5-5.6G ED VR.</description>
   <pubDate>11 Apr 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon RF70-200mm F2.8 L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2021-056407_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF70-200mm F2.8 L IS USM.</description>
   <pubDate>08 Apr 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Canon RF100mm F2.8 L Macro IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2021-047297_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF100mm F2.8 L Macro IS USM.</description>
   <pubDate>08 Apr 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S DX Nikkor 18-105mm f/3.5-5.6G ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2021-039812_Example08P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Nikkor 18-105mm f/3.5-5.6G ED VR.</description>
   <pubDate>02 Apr 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF Zoom-Nikkor 35-70mm f/2.8D</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006320698_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Zoom-Nikkor 35-70mm f/2.8D.</description>
   <pubDate>28 Mar 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon RF85mm F2 Macro IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20210072505_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF85mm F2 Macro IS STM.</description>
   <pubDate>17 Mar 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF Zoom-Nikkor 18-35mm f/3.5-4.5D IF-ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20010030812_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Zoom-Nikkor 18-35mm f/3.5-4.5D IF-ED.</description>
   <pubDate>12 Mar 2021 15:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Nikkor 300mm f/2.8D IF-ED II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2015-102734_Example01MLP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 300mm f/2.8D IF-ED II.</description>
   <pubDate>12 Mar 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Teleconverter TC-14E III</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2015-102734_Example01TCP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Teleconverter TC-14E III.</description>
   <pubDate>12 Mar 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Teleconverter TC800-1.25E ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2013-250290_Example01TCP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Teleconverter TC800-1.25E ED.</description>
   <pubDate>12 Mar 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Teleconverter TC-17E II</title>
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   <description>Nikon AF-S Teleconverter TC-17E II.</description>
   <pubDate>11 Mar 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Series E 135mm f/2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004303314_Example03_Tale76.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Series E 135mm f/2.8.</description>
   <pubDate>11 Mar 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Series E 100mm f/2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004303314_Example01_Tale80.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Series E 100mm f/2.8.</description>
   <pubDate>11 Mar 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon pre-AI 800mm f/8 ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003774991_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon pre-AI 800mm f/8 ED.</description>
   <pubDate>10 Mar 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Yongnuo YN50mm f1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN204883027_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Yongnuo YN50mm f1.8.</description>
   <pubDate>08 Mar 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Yongnuo YN100mm F2N</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN206074892_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Yongnuo YN100mm F2N.</description>
   <pubDate>08 Mar 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Zhong Yi SpeedMaster 65mm F1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN110596863_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zhong Yi SpeedMaster 65mm F1.4.</description>
   <pubDate>08 Mar 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Zhong Yi Creator 35mm F2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN104101985_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zhong Yi Creator 35mm F2.</description>
   <pubDate>07 Mar 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Zhong Yi 85mm f2.8 1-5X Super Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN110501809_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zhong Yi 85mm f2.8 1-5X Super Macro.</description>
   <pubDate>07 Mar 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Zhong Yi SpeedMaster 35mm F0.95 II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN107272156_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zhong Yi SpeedMaster 35mm F0.95 II.</description>
   <pubDate>07 Mar 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF17-40mm f4L USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2020-190696_Example01MLP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF17-40mm f4L USM.</description>
   <pubDate>06 Mar 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF24mm f2.8 IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2020-190696_Example03MLP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF24mm f2.8 IS USM.</description>
   <pubDate>06 Mar 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon XC15-45mm F3.5-5.6 OIS PZ</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2021-015312_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XC15-45mm F3.5-5.6 OIS PZ.</description>
   <pubDate>06 Mar 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-P DX Nikkor 70-300mm f4.5-6.3G ED VR</title>
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   <title>New Lens: Canon RF70-200mm F4 L IS USM</title>
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   <title>New Lens: Sony E 30mm F3.5 Macro</title>
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   <pubDate>09 Feb 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Sony FE 70-200 mm F2.8 GM OSS</title>
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   <title>New Lens: Sigma APO Macro 180mm F2.8 EX DG OS HSM</title>
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   <title>New Lens: Sony E 20mm F2.8</title>
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   <title>New Lens: Sigma 120-300mm F2.8 DG OS HSM Sport</title>
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   <title>New Lens: Sigma 30mm F1.4 DC HSM Art</title>
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   <description>Sigma 30mm F1.4 DC HSM Art.</description>
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   <title>New Lens: Sigma 24mm F1.4 DG HSM Art</title>
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   <description>Sigma 24mm F1.4 DG HSM Art.</description>
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   <title>New Lens: Sigma 18-250mm F3.5-6.3 DC Macro OS HSM</title>
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   <pubDate>07 Feb 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 12-24mm F4 DG HSM A</title>
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   <pubDate>06 Feb 2021 15:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 16mm F1.4 DC DN Contemporary</title>
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   <title>New Lens: Sigma 14-24mm F2.8 DG HSM Art</title>
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   <description>Sigma 14-24mm F2.8 DG HSM Art.</description>
   <pubDate>06 Feb 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 20mm F1.4 DG HSM Art</title>
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   <description>Sigma 20mm F1.4 DG HSM Art.</description>
   <pubDate>06 Feb 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 45mm F2.8 DG DN C</title>
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   <pubDate>05 Feb 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Samyang AF 85mm F1.4 EF</title>
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   <title>New Lens: Panasonic Lumix G Vario 100-300mm F4.0-5.6 II Power OIS</title>
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   <pubDate>04 Feb 2021 16:00:00 -0500</pubDate>
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   <title>New Lens: Samyang AF 24mm F2.8 FE</title>
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   <title>New Lens: Panasonic Leica DG Macro-Elmarit 45mm F2.8 Asph Mega OIS</title>
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   <pubDate>04 Feb 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Panasonic Lumix G Fisheye 8mm F3.5</title>
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   <pubDate>04 Feb 2021 13:00:00 -0500</pubDate>
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   <pubDate>03 Feb 2021 14:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF28mm f2.8 IS USM</title>
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   <pubDate>31 Jan 2021 15:00:00 -0500</pubDate>
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   <pubDate>29 Jan 2021 13:00:00 -0500</pubDate>
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   <title>New Lens: Panasonic Lumix S Pro 50mm F1.4</title>
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   <title>New Lens: Canon EF24-105mm F4L IS USM</title>
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   <title>New Lens: Panasonic Lumix S 24-105mm F4 Macro OIS</title>
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   <description>Panasonic Lumix S 24-105mm F4 Macro OIS.</description>
   <pubDate>28 Jan 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Olympus M.Zuiko ED 12-200mm F3.5-6.3</title>
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   <description>Olympus M.Zuiko ED 12-200mm F3.5-6.3.</description>
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   <title>New Lens: Ricoh HD Pentax-D FA 85mm F1.4ED SDM AW</title>
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   <pubDate>24 Jan 2021 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon RF100-500mm F4.5-7.1 L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20210003832_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF100-500mm F4.5-7.1 L IS USM.</description>
   <pubDate>23 Jan 2021 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Fujifilm Fujinon GF45-100mm F4 R LM OIS WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200379223_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon GF45-100mm F4 R LM OIS WR.</description>
   <pubDate>23 Jan 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210123_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon RF24-105mm F4-7.1 IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20210003831_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF24-105mm F4-7.1 IS STM.</description>
   <pubDate>22 Jan 2021 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20210122_1200</guid>
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  <item>
   <title>New Lens: Nikon Nikkor Z 85mm f/1.8 S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2020-173366_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z 85mm f/1.8 S.</description>
   <pubDate>04 Nov 2020 12:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Samsung 10mm F3.5 Fisheye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20130235467_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samsung 10mm F3.5 Fisheye.</description>
   <pubDate>04 Oct 2020 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20201004_1500</guid>
  </item>
  <item>
   <title>New Lens: Samsung 30mm F2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20100149663_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samsung 30mm F2.</description>
   <pubDate>04 Oct 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20201004_1400</guid>
  </item>
  <item>
   <title>New Lens: Samsung 18-55mm F3.5-5.6 OIS III</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20110149118_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samsung 18-55mm F3.5-5.6 OIS III.</description>
   <pubDate>04 Oct 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20201004_1300</guid>
  </item>
  <item>
   <title>New Lens: Samsung 20-50mm F3.5-5.6 ED II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20120057246_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samsung 20-50mm F3.5-5.6 ED II.</description>
   <pubDate>04 Oct 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20201004_1200</guid>
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  <item>
   <title>New Lens: Samsung 12-24mm F4-5.6 ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20130235465_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samsung 12-24mm F4-5.6 ED.</description>
   <pubDate>03 Oct 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20201003_1400</guid>
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  <item>
   <title>New Lens: Samsung 50-200mm F4-5.6 ED OIS III</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20110157719_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samsung 50-200mm F4-5.6 ED OIS III.</description>
   <pubDate>03 Oct 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20201003_1300</guid>
  </item>
  <item>
   <title>New Lens: Samsung 18-200mm F3.5-6.3 ED OIS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20120154913_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samsung 18-200mm F3.5-6.3 ED OIS.</description>
   <pubDate>03 Oct 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20201003_1200</guid>
  </item>
  <item>
   <title>New Lens: Samsung 16mm F2.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20130057972_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samsung 16mm F2.4.</description>
   <pubDate>02 Oct 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20201002_1400</guid>
  </item>
  <item>
   <title>New Lens: Samsung 45mm F1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20130314588_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samsung 45mm F1.8.</description>
   <pubDate>02 Oct 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20201002_1300</guid>
  </item>
  <item>
   <title>New Lens: Samsung 20mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20120056976_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samsung 20mm F2.8.</description>
   <pubDate>02 Oct 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20201002_1200</guid>
  </item>
  <item>
   <title>New Chapter: Light Throughput</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_21.htm</link>
   <description>Light Throughput.</description>
   <pubDate>13 Sep 2020 01:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200913_0100</guid>
  </item>
  <item>
   <title>New Chapter: Bokeh Ball Diameter</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_18_50.htm</link>
   <description>Bokeh Ball Diameter.</description>
   <pubDate>11 Sep 2020 04:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200911_0400</guid>
  </item>
  <item>
   <title>New Chapter: Angle of View and Pupil Magnification</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_19.htm</link>
   <description>Angle of View and Pupil Magnification.</description>
   <pubDate>11 Sep 2020 03:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200911_0300</guid>
  </item>
  <item>
   <title>New Chapter: Angle of View and Magnification Formulas</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_19_50.htm</link>
   <description>Angle of View and Magnification Formulas.</description>
   <pubDate>11 Sep 2020 02:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200911_0200</guid>
  </item>
  <item>
   <title>New Chapter: Sine versus Tangent</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_20.htm</link>
   <description>Sine versus Tangent.</description>
   <pubDate>11 Sep 2020 01:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200911_0100</guid>
  </item>
  <item>
   <title>New Chapter: Proof of Concept</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_01.htm</link>
   <description>Proof of Concept.</description>
   <pubDate>09 Sep 2020 05:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200909_0500</guid>
  </item>
  <item>
   <title>New Chapter: Locating the Focal Points</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_02.htm</link>
   <description>Locating the Focal Points.</description>
   <pubDate>09 Sep 2020 04:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200909_0400</guid>
  </item>
  <item>
   <title>New Chapter: Locating the Principal Points</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_02_50.htm</link>
   <description>Locating the Principal Points.</description>
   <pubDate>09 Sep 2020 03:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200909_0300</guid>
  </item>
  <item>
   <title>New Chapter: Determining the Focal Length</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_05.htm</link>
   <description>Determining the Focal Length.</description>
   <pubDate>09 Sep 2020 02:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200909_0200</guid>
  </item>
  <item>
   <title>New Chapter: Locating the Entrance and Exit Pupils</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_09.htm</link>
   <description>Locating the Entrance and Exit Pupils.</description>
   <pubDate>09 Sep 2020 01:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200909_0100</guid>
  </item>
  <item>
   <title>New Lens: Canon Extender RF1.4X</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200271904_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon Extender RF1.4X.</description>
   <pubDate>07 Sep 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200907_1300</guid>
  </item>
  <item>
   <title>New Lens: Canon Extender RF2X</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200271904_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon Extender RF2X.</description>
   <pubDate>07 Sep 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200907_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon GF45mm F2.8 R WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200174231_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon GF45mm F2.8 R WR.</description>
   <pubDate>05 Sep 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200905_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon AF Zoom-Nikkor 28-85mm f/3.5-4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004806000_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Zoom-Nikkor 28-85mm f/3.5-4.5.</description>
   <pubDate>30 Aug 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200830_1300</guid>
  </item>
  <item>
   <title>New Lens: Nikon AI Micro-Nikkor 105mm f/2.8S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004392724_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI Micro-Nikkor 105mm f/2.8S.</description>
   <pubDate>30 Aug 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200830_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon RF35mm F1.8 Macro IS STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20190113711_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF35mm F1.8 Macro IS STM.</description>
   <pubDate>29 Aug 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200829_1400</guid>
  </item>
  <item>
   <title>New Lens: Nikon AF-S Nikkor 600mm f/4E FL ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180031811_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 600mm f/4E FL ED VR.</description>
   <pubDate>29 Aug 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200829_1300</guid>
  </item>
  <item>
   <title>New Lens: Nikon AF-S Nikkor 800mm f/5.6E FL ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2013-250293_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 800mm f/5.6E FL ED VR.</description>
   <pubDate>29 Aug 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200829_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon RF15-35mm F2.8 L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200257181_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF15-35mm F2.8 L IS USM.</description>
   <pubDate>28 Aug 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200828_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon RF85mm F1.2 L USM (DS)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200012073_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF85mm F1.2 L USM (DS).</description>
   <pubDate>23 Aug 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200823_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon AF-S Nikkor 24-70mm f/2.8E ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200142168_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 24-70mm f/2.8E ED VR.</description>
   <pubDate>18 Aug 2020 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200818_1500</guid>
  </item>
  <item>
   <title>New Lens: Nikon Nikkor Z 24-200mm f/4-6.3 VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2020-157904_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z 24-200mm f/4-6.3 VR.</description>
   <pubDate>18 Aug 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200818_1400</guid>
  </item>
  <item>
   <title>New Lens: Nikon AF-S Nikkor 70-200mm f/4G ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20170315337_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 70-200mm f/4G ED VR.</description>
   <pubDate>18 Aug 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200818_1300</guid>
  </item>
  <item>
   <title>New Lens: Nikon Nikkor Z 24-70mm f/2.8 S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2020-136749_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z 24-70mm f/2.8 S.</description>
   <pubDate>18 Aug 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200818_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon Nikkor Z DX 50-250mm f/4.5-6.3 VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2020-105107_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z DX 50-250mm f/4.5-6.3 VR.</description>
   <pubDate>17 Aug 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200817_1200</guid>
  </item>
  <item>
   <title>New Lens: Tamron 14-150mm F/3.5-5.8 Di III</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20140347522_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron 14-150mm F/3.5-5.8 Di III.</description>
   <pubDate>13 Aug 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200813_1400</guid>
  </item>
  <item>
   <title>New Lens: Tamron SP 70-200mm F/2.8 Di VC USD</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008867144_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron SP 70-200mm F/2.8 Di VC USD.</description>
   <pubDate>13 Aug 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200813_1300</guid>
  </item>
  <item>
   <title>New Lens: Tamron 18-200mm F/3.5-6.3 Di II VC</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2014-126145_Example09P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron 18-200mm F/3.5-6.3 Di II VC.</description>
   <pubDate>13 Aug 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200813_1200</guid>
  </item>
  <item>
   <title>New Lens: Tamron SP 70-300mm F/4-5.6 Di VC USD</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008228605_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron SP 70-300mm F/4-5.6 Di VC USD.</description>
   <pubDate>12 Aug 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200812_1200</guid>
  </item>
  <item>
   <title>New Lens: Tamron SP 150-600mm F/5-6.3 Di VC USD</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US010545321_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron SP 150-600mm F/5-6.3 Di VC USD.</description>
   <pubDate>11 Aug 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200811_1200</guid>
  </item>
  <item>
   <title>New Lens: Tamron SP 90mm F/2.8 Di Macro 1:1 VC USD</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US009063253_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron SP 90mm F/2.8 Di Macro 1:1 VC USD.</description>
   <pubDate>10 Aug 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200810_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon AF-S DX Zoom-Nikkor 18-55mm f/3.5-5.6G ED II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007277232_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Zoom-Nikkor 18-55mm f/3.5-5.6G ED II.</description>
   <pubDate>28 Jul 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200728_1200</guid>
  </item>
  <item>
   <title>New Lens: Nikon AF-S Nikkor 80-400mm f/4.5-5.6G ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200049962_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 80-400mm f/4.5-5.6G ED VR.</description>
   <pubDate>24 Jul 2020 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200724_1500</guid>
  </item>
  <item>
   <title>New Lens: Nikon AF-P Nikkor 70-300mm f/4.5-5.6E ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20190353880_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-P Nikkor 70-300mm f/4.5-5.6E ED VR.</description>
   <pubDate>24 Jul 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200724_1400</guid>
  </item>
  <item>
   <title>New Lens: Nikon Nikkor Z 70-200mm f/2.8 VR S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/WO2020-105104_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor Z 70-200mm f/2.8 VR S.</description>
   <pubDate>24 Jul 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200724_1300</guid>
  </item>
  <item>
   <title>New Lens: Nikon AF-P DX Nikkor 18-55mm f/3.5-5.6G VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US010690896_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-P DX Nikkor 18-55mm f/3.5-5.6G VR.</description>
   <pubDate>24 Jul 2020 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Ricoh HD Pentax-D FA 50mm F1.4 SDM AW</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20190250367_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh HD Pentax-D FA 50mm F1.4 SDM AW.</description>
   <pubDate>20 Jul 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200720_1200</guid>
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  <item>
   <title>New Lens: Sigma 28mm F1.4 DG HSM A</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2019-219472_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 28mm F1.4 DG HSM A.</description>
   <pubDate>17 Jul 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200717_1300</guid>
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  <item>
   <title>New Lens: Sigma 56mm F1.4 DC DN C</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2020-030383_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 56mm F1.4 DC DN C.</description>
   <pubDate>17 Jul 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200717_1200</guid>
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  <item>
   <title>New Lens: Sigma 14-24mm F2.8 DG DN A</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2020-042221_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 14-24mm F2.8 DG DN A.</description>
   <pubDate>16 Jul 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200716_1300</guid>
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  <item>
   <title>New Lens: Sigma 60-600mm F4.5-6.3 DG OS HSM S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2020-020948_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 60-600mm F4.5-6.3 DG OS HSM S.</description>
   <pubDate>16 Jul 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200716_1200</guid>
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  <item>
   <title>New Lens: Panasonic Lumix S Pro 70-200mm F4 OIS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2020-086133_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Panasonic Lumix S Pro 70-200mm F4 OIS.</description>
   <pubDate>15 Jul 2020 16:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Fujifilm Fujinon XF16mm F2.8 R WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200073096_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF16mm F2.8 R WR.</description>
   <pubDate>15 Jul 2020 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200715_1500</guid>
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  <item>
   <title>New Lens: Canon RF24-70mm F2.8 L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200132974_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF24-70mm F2.8 L IS USM.</description>
   <pubDate>15 Jul 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200715_1400</guid>
  </item>
  <item>
   <title>New Lens: Canon RF24-240mm F4-6.3 IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200142167_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF24-240mm F4-6.3 IS USM.</description>
   <pubDate>15 Jul 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200715_1300</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF16-80mm F4 R OIS WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200166735_Example11P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF16-80mm F4 R OIS WR.</description>
   <pubDate>15 Jul 2020 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon EF-S18-200mm f3.5-5.6 IS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2009-175324_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF-S18-200mm f3.5-5.6 IS.</description>
   <pubDate>14 Jul 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200714_1300</guid>
  </item>
  <item>
   <title>New Lens: Canon EF28-90mm f4-5.6 II USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2009-282554_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF28-90mm f4-5.6 II USM.</description>
   <pubDate>14 Jul 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200714_1200</guid>
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  <item>
   <title>New Lens: Canon EF11-24mm f4L USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150146085_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF11-24mm f4L USM.</description>
   <pubDate>13 Jul 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200713_1300</guid>
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  <item>
   <title>New Lens: Canon EF70-300mm f4-5.6 IS II USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20170003486_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF70-300mm f4-5.6 IS II USM.</description>
   <pubDate>13 Jul 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200713_1200</guid>
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  <item>
   <title>New Lens: Canon EF16-35mm f4L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US010247926_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF16-35mm f4L IS USM.</description>
   <pubDate>09 Jul 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200709_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon EF-S55-250mm f4-5.6 IS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007471462_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF-S55-250mm f4-5.6 IS.</description>
   <pubDate>08 Jul 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200708_1400</guid>
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  <item>
   <title>New Lens: Canon EF100-300mm f4.5-5.6 USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007158320_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF100-300mm f4.5-5.6 USM.</description>
   <pubDate>08 Jul 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200708_1300</guid>
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  <item>
   <title>New Lens: Canon EF24-70mm f2.8L II USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008736971_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF24-70mm f2.8L II USM.</description>
   <pubDate>08 Jul 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200708_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon Extender EF2X III</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180095255_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon Extender EF2X III.</description>
   <pubDate>07 Jul 2020 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200707_1600</guid>
  </item>
  <item>
   <title>New Lens: Canon Extender EF1.4X III</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180095255_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon Extender EF1.4X III.</description>
   <pubDate>07 Jul 2020 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200707_1500</guid>
  </item>
  <item>
   <title>New Lens: Canon EF400mm f2.8L IS II USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180095255_MLP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF400mm f2.8L IS II USM.</description>
   <pubDate>07 Jul 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200707_1400</guid>
  </item>
  <item>
   <title>New Lens: Canon EF200-400mm f4L IS USM Extender 1x</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/EP2664955_Example01AP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF200-400mm f4L IS USM Extender 1x.</description>
   <pubDate>07 Jul 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200707_1300</guid>
  </item>
  <item>
   <title>New Lens: Canon EF200-400mm f4L IS USM Extender 1.4x</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/EP2664955_Example01BP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF200-400mm f4L IS USM Extender 1.4x.</description>
   <pubDate>07 Jul 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200707_1200</guid>
  </item>
  <item>
   <title>New Lens: Canon RF24-105mm F4 L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/GB2573612_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF24-105mm F4 L IS USM.</description>
   <pubDate>06 Jul 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200706_1200</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-FA 28-80mm F3.5-4.7</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006078435_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 28-80mm F3.5-4.7.</description>
   <pubDate>30 Jun 2020 14:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-FA 80-320mm F4-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006052235_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 80-320mm F4-5.6.</description>
   <pubDate>30 Jun 2020 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Ricoh smc Pentax-FA 24-90mm F3.5-4.5 AL [IF]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006128140_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 24-90mm F3.5-4.5 AL [IF].</description>
   <pubDate>30 Jun 2020 12:00:00 -0500</pubDate>
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  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-A 28-135mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004523814_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-A 28-135mm F4.</description>
   <pubDate>29 Jun 2020 18:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Ricoh smc Pentax-F 70-210mm F4-5.6 ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004871241_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-F 70-210mm F4-5.6 ED.</description>
   <pubDate>29 Jun 2020 17:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200629_1700</guid>
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  <item>
   <title>New Lens: Ricoh smc Pentax-FA 70-200mm F4-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005061053_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 70-200mm F4-5.6.</description>
   <pubDate>29 Jun 2020 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200629_1600</guid>
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  <item>
   <title>New Lens: Ricoh smc Pentax-FA 100-300mm F4-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005347399_Example07P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 100-300mm F4-5.6.</description>
   <pubDate>29 Jun 2020 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200629_1500</guid>
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  <item>
   <title>New Lens: Ricoh smc Pentax-A 35-70mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004812022_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-A 35-70mm F4.</description>
   <pubDate>29 Jun 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200629_1400</guid>
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  <item>
   <title>New Lens: Ricoh smc Pentax-A 200mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004550987_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-A 200mm F4.</description>
   <pubDate>29 Jun 2020 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Ricoh smc Pentax-M 35mm F1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004143944_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-M 35mm F1.4.</description>
   <pubDate>29 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200629_1200</guid>
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  <item>
   <title>New Lens: Ricoh smc Pentax-M 50mm F1.7</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003817603_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-M 50mm F1.7.</description>
   <pubDate>28 Jun 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200628_1300</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax 85-210mm F4.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003506337_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax 85-210mm F4.5.</description>
   <pubDate>28 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200628_1200</guid>
  </item>
  <item>
   <title>New Lens: Ricoh HD Pentax-DA 11-18mm F2.8ED DC AW</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180164556_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh HD Pentax-DA 11-18mm F2.8ED DC AW.</description>
   <pubDate>27 Jun 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200627_1300</guid>
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  <item>
   <title>New Lens: Ricoh smc Pentax-M 28mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004143945_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-M 28mm F2.8.</description>
   <pubDate>27 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200627_1200</guid>
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  <item>
   <title>New Lens: Ricoh smc Pentax-FA 28-70mm F4 AL</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005786942_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 28-70mm F4 AL.</description>
   <pubDate>26 Jun 2020 17:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200626_1700</guid>
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  <item>
   <title>New Lens: Ricoh HD Pentax-DA 21mm F3.2 Limited</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007411746_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh HD Pentax-DA 21mm F3.2 Limited.</description>
   <pubDate>26 Jun 2020 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200626_1600</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-FA 200mm F4 Macro ED [IF]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006359739_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 200mm F4 Macro ED [IF].</description>
   <pubDate>26 Jun 2020 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200626_1500</guid>
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  <item>
   <title>New Lens: Ricoh smc Pentax-FA 28mm F2.8 Soft</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005822132_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 28mm F2.8 Soft.</description>
   <pubDate>26 Jun 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200626_1400</guid>
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  <item>
   <title>New Lens: Ricoh smc Pentax-FA 100-300mm F4.7-5.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20010006433_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 100-300mm F4.7-5.8.</description>
   <pubDate>26 Jun 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200626_1300</guid>
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  <item>
   <title>New Lens: Ricoh smc Pentax-F 85mm F2.8 Soft</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005267086_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-F 85mm F2.8 Soft.</description>
   <pubDate>26 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200626_1200</guid>
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  <item>
   <title>New Lens: Ricoh smc Pentax-FA 80-200mm F2.8 ED [IF]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005572276_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 80-200mm F2.8 ED [IF].</description>
   <pubDate>25 Jun 2020 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200625_1600</guid>
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  <item>
   <title>New Lens: Ricoh smc Pentax-FA 28-105mm F4-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005264965_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 28-105mm F4-5.6.</description>
   <pubDate>25 Jun 2020 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200625_1500</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-F 35-80mm F4-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005546232_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-F 35-80mm F4-5.6.</description>
   <pubDate>25 Jun 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200625_1400</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-F 17-28mm F3.5-4.5 Fish-Eye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005724193_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-F 17-28mm F3.5-4.5 Fish-Eye.</description>
   <pubDate>25 Jun 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200625_1300</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-FA 28-70mm F2.8 AL</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005568323_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 28-70mm F2.8 AL.</description>
   <pubDate>25 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200625_1200</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-F 100mm F2.8 Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004770516_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-F 100mm F2.8 Macro.</description>
   <pubDate>24 Jun 2020 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200624_1600</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-F 135mm F2.8 [IF]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004793698_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-F 135mm F2.8 [IF].</description>
   <pubDate>24 Jun 2020 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200624_1500</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-F 250-600mm F5.6 ED [IF]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004848883_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-F 250-600mm F5.6 ED [IF].</description>
   <pubDate>24 Jun 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200624_1400</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-FA 24mm F2 AL [IF]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004934797_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 24mm F2 AL [IF].</description>
   <pubDate>24 Jun 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200624_1300</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-FA 28mm F2.8 AL</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005233474_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 28mm F2.8 AL.</description>
   <pubDate>24 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200624_1200</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-A 400mm F2.8 ED [IF]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004545654_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-A 400mm F2.8 ED [IF].</description>
   <pubDate>23 Jun 2020 18:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200623_1800</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-M 35-70mm F2.8-3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004074931_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-M 35-70mm F2.8-3.5.</description>
   <pubDate>23 Jun 2020 17:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200623_1700</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax 24mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003938883_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax 24mm F2.8.</description>
   <pubDate>23 Jun 2020 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200623_1600</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax 24mm F3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003545845_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax 24mm F3.5.</description>
   <pubDate>23 Jun 2020 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200623_1500</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-M 75-150mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004331389_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-M 75-150mm F4.</description>
   <pubDate>23 Jun 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200623_1400</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-M 300mm F4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004293197_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-M 300mm F4.</description>
   <pubDate>23 Jun 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200623_1300</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax 17mm F4 Fish-Eye</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003515462_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax 17mm F4 Fish-Eye.</description>
   <pubDate>23 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200623_1200</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-FA 20-35mm F4AL</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006327098_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 20-35mm F4AL.</description>
   <pubDate>22 Jun 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200622_1300</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-FA 600mm F4ED[IF]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004904070_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 600mm F4ED[IF].</description>
   <pubDate>22 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200622_1200</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-DA 17-70mm F4AL[IF] SDM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007804652_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-DA 17-70mm F4AL[IF] SDM.</description>
   <pubDate>21 Jun 2020 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200621_1600</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-DA 50-135mm F2.8ED[IF] SDM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007289274_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-DA 50-135mm F2.8ED[IF] SDM.</description>
   <pubDate>21 Jun 2020 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200621_1500</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-DA Fish-eye 10-17mm F3.5-4.5ED[IF]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007317581_Example09P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-DA Fish-eye 10-17mm F3.5-4.5ED[IF].</description>
   <pubDate>21 Jun 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200621_1400</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-DA 16-50mm F2.8ED AL[IF] SD</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007301711_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-DA 16-50mm F2.8ED AL[IF] SD.</description>
   <pubDate>21 Jun 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200621_1300</guid>
  </item>
  <item>
   <title>New Lens: Ricoh HD Pentax-D FA645 35mm F3.5AL[IF]</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20010007512_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh HD Pentax-D FA645 35mm F3.5AL[IF].</description>
   <pubDate>21 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200621_1200</guid>
  </item>
  <item>
   <title>New Lens: Ricoh smc Pentax-DA 55mm F1.4 SDM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20100073777_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-DA 55mm F1.4 SDM.</description>
   <pubDate>20 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200620_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF1.4X TC F2 WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200018936_Example01TCP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF1.4X TC F2 WR.</description>
   <pubDate>18 Jun 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200618_1300</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF200mm F2 R LM OIS WR with Fujifilm Fujinon XF1.4X TC F2 WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20200018936_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF200mm F2 R LM OIS WR with Fujifilm Fujinon XF1.4X TC F2 WR.</description>
   <pubDate>18 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200618_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF50-140mm F2.8 R LM OIS WR with Fujifilm Fujinon XF1.4X TC WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20170090163_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF50-140mm F2.8 R LM OIS WR with Fujifilm Fujinon XF1.4X TC WR.</description>
   <pubDate>17 Jun 2020 16:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200617_1600</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF50-140mm F2.8 R LM OIS WR with Fujifilm Fujinon XF2X TC WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US010197893_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF50-140mm F2.8 R LM OIS WR with Fujifilm Fujinon XF2X TC WR.</description>
   <pubDate>17 Jun 2020 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200617_1500</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF50-140mm F2.8 R LM OIS WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20170090163_Example01MLP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF50-140mm F2.8 R LM OIS WR.</description>
   <pubDate>17 Jun 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200617_1400</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF1.4X TC WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20170090163_Example01TCP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF1.4X TC WR.</description>
   <pubDate>17 Jun 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200617_1300</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF2X TC WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US010197893_Example01TCP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF2X TC WR.</description>
   <pubDate>17 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200617_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF18-135mm F3.5-5.6 R LM OIS WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US009651761_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF18-135mm F3.5-5.6 R LM OIS WR.</description>
   <pubDate>16 Jun 2020 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200616_1500</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF55-200mm F3.5-4.8 R LM OIS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/DE112013006887_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF55-200mm F3.5-4.8 R LM OIS.</description>
   <pubDate>16 Jun 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200616_1400</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF18-55mm F2.8-4 R LM OIS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20150177500_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF18-55mm F2.8-4 R LM OIS.</description>
   <pubDate>16 Jun 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200616_1300</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF60mm F2.4 R Macro</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20140247506_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF60mm F2.4 R Macro.</description>
   <pubDate>16 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200616_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon XF200mm F2 R LM OIS WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20190265504_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon XF200mm F2 R LM OIS WR.</description>
   <pubDate>15 Jun 2020 15:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200615_1500</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon GF250mm F4 R LM OIS WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20190094496_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon GF250mm F4 R LM OIS WR.</description>
   <pubDate>15 Jun 2020 14:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200615_1400</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon GF1.4X TC WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20190086645_Example01TCP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon GF1.4X TC WR.</description>
   <pubDate>15 Jun 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200615_1300</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon GF250mm F4 R LM OIS WR with Fujifilm Fujinon GF1.4X TC WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20190086645_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon GF250mm F4 R LM OIS WR with Fujifilm Fujinon GF1.4X TC WR.</description>
   <pubDate>15 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200615_1200</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon GF32-64mm F4 R LM WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US010191246_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon GF32-64mm F4 R LM WR.</description>
   <pubDate>14 Jun 2020 13:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200614_1300</guid>
  </item>
  <item>
   <title>New Lens: Fujifilm Fujinon GF23mm F4 R LM WR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180210178_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Fujifilm Fujinon GF23mm F4 R LM WR.</description>
   <pubDate>14 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200614_1200</guid>
  </item>
  <item>
   <title>New Lens: TH Swiss Irix 11mm f/4.0</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20190086648_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>TH Swiss Irix 11mm f/4.0.</description>
   <pubDate>12 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200612_1200</guid>
  </item>
  <item>
   <title>New Lens: Yongnuo YN50mm f/1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN106249387_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Yongnuo YN50mm f/1.4.</description>
   <pubDate>11 Jun 2020 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200611_1200</guid>
  </item>
  <item>
   <title>New Lens: Samyang XP 35mm F1.2</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/KR1020180084767_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samyang XP 35mm F1.2.</description>
   <pubDate>08 Jun 2020 18:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200608_1800</guid>
  </item>
  <item>
   <title>New Lens: Samyang AF 50mm F1.4 FE</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/KR1020150147546_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samyang AF 50mm F1.4 FE.</description>
   <pubDate>08 Jun 2020 17:00:00 -0500</pubDate>
   <guid isPermaLink="false">20200608_1700</guid>
  </item>
  <item>
   <title>New Lens: Samyang 135mm F2.0 ED UMC</title>
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   <title>New Lens: Samyang AF 35mm F2.8 FE</title>
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   <title>New Lens: Samyang AF 14mm F2.8 FE/RF</title>
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   <title>New Lens: Samyang 100mm F2.8 ED UMC Macro</title>
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   <description>Samyang 100mm F2.8 ED UMC Macro.</description>
   <pubDate>08 Jun 2020 13:00:00 -0500</pubDate>
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   <title>New Lens: Samyang 50mm F1.4 AS UMC</title>
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   <description>Samyang 50mm F1.4 AS UMC.</description>
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   <title>New Lens: Leica APO-Vario-Elmarit-SL 90-280mm f/2.8-4</title>
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   <description>Leica APO-Vario-Elmarit-SL 90-280mm f/2.8-4.</description>
   <pubDate>07 Jun 2020 13:00:00 -0500</pubDate>
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   <title>New Lens: Leica Super-Vario-Elmar-SL 16-35mm f/3.5-4.5 Asph</title>
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   <description>Leica Super-Vario-Elmar-SL 16-35mm f/3.5-4.5 Asph.</description>
   <pubDate>07 Jun 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh HD Pentax-DA 70mm F2.4 Limited</title>
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   <description>Ricoh HD Pentax-DA 70mm F2.4 Limited.</description>
   <pubDate>06 Jun 2020 13:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh HD Pentax-DA 35mm F2.8 Macro Limited</title>
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   <description>Ricoh HD Pentax-DA 35mm F2.8 Macro Limited.</description>
   <pubDate>06 Jun 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Touit 2.8 50M</title>
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   <description>Zeiss Touit 2.8 50M.</description>
   <pubDate>05 Jun 2020 15:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF-S10-18mm f4.5-5.6 IS STM</title>
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   <description>Canon EF-S10-18mm f4.5-5.6 IS STM.</description>
   <pubDate>05 Jun 2020 14:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF-M11-22mm f4-5.6 IS STM</title>
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   <description>Canon EF-M11-22mm f4-5.6 IS STM.</description>
   <pubDate>05 Jun 2020 13:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF-S24mm f2.8 STM</title>
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   <description>Canon EF-S24mm f2.8 STM.</description>
   <pubDate>05 Jun 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 18-200mm F3.5-6.3 DC</title>
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   <description>Sigma 18-200mm F3.5-6.3 DC.</description>
   <pubDate>04 Jun 2020 14:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 85mm F1.4 EX DG HSM</title>
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   <description>Sigma 85mm F1.4 EX DG HSM.</description>
   <pubDate>04 Jun 2020 13:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 30mm F2.8 DN A</title>
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   <description>Sigma 30mm F2.8 DN A.</description>
   <pubDate>04 Jun 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 17-70mm F2.8-4 DC Macro OS HSM C</title>
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   <pubDate>03 Jun 2020 13:00:00 -0500</pubDate>
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   <title>New Lens: Hasselblad HC 3.5 50-II</title>
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   <description>Hasselblad HC 3.5 50-II.</description>
   <pubDate>03 Jun 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF-M15-45mm f3.5-6.3 IS STM</title>
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   <pubDate>02 Jun 2020 14:00:00 -0500</pubDate>
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   <title>New Lens: Cosina Voigtlander Nokton 35mm F1.2 Aspherical</title>
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   <description>Cosina Voigtlander Nokton 35mm F1.2 Aspherical.</description>
   <pubDate>02 Jun 2020 13:00:00 -0500</pubDate>
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   <title>New Lens: Tamron SP AF60mm F/2 Di II LD [IF] Macro 1:1</title>
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   <description>Tamron SP AF60mm F/2 Di II LD [IF] Macro 1:1.</description>
   <pubDate>02 Jun 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Sony Sonnar T* E 24mm F1.8 ZA</title>
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   <description>Sony Sonnar T* E 24mm F1.8 ZA.</description>
   <pubDate>01 Jun 2020 15:00:00 -0500</pubDate>
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   <title>New Lens: Sony E 18-200mm F3.5-6.3 OSS</title>
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   <description>Sony E 18-200mm F3.5-6.3 OSS.</description>
   <pubDate>01 Jun 2020 14:00:00 -0500</pubDate>
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   <title>New Lens: Sony Sonnar T* FE 35mm F2.8 ZA</title>
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   <description>Sony Sonnar T* FE 35mm F2.8 ZA.</description>
   <pubDate>01 Jun 2020 13:00:00 -0500</pubDate>
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   <title>New Lens: Sony Vario-Tessar T* E 16-70mm F4 ZA OSS</title>
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   <description>Sony Vario-Tessar T* E 16-70mm F4 ZA OSS.</description>
   <pubDate>01 Jun 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Sony 70-400mm F4-5.6 G SSM II</title>
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   <description>Sony 70-400mm F4-5.6 G SSM II.</description>
   <pubDate>31 May 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Sony E 18-55 mm F3.5-5.6 OSS</title>
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   <description>Sony E 18-55 mm F3.5-5.6 OSS.</description>
   <pubDate>30 May 2020 13:00:00 -0500</pubDate>
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   <title>New Lens: Sony E 55-210mm F4.5-6.3 OSS</title>
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   <description>Sony E 55-210mm F4.5-6.3 OSS.</description>
   <pubDate>30 May 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon XF27mm F2.8</title>
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   <description>Fujifilm Fujinon XF27mm F2.8.</description>
   <pubDate>29 May 2020 17:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon XF16-55mm F2.8 R LM WR</title>
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   <pubDate>29 May 2020 15:00:00 -0500</pubDate>
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   <title>New Lens: Fujifilm Fujinon XF10-24mm F4 R OIS</title>
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   <description>Fujifilm Fujinon XF10-24mm F4 R OIS.</description>
   <pubDate>29 May 2020 14:00:00 -0500</pubDate>
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   <title>New Lens: Panasonic Leica DG Summilux 25mm F1.4 II Asph</title>
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   <title>New Lens: Fujifilm Fujinon XF14mm F2.8 R</title>
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   <description>Fujifilm Fujinon XF14mm F2.8 R.</description>
   <pubDate>29 May 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Panasonic Lumix G Vario 7-14mm F4.0 Asph</title>
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   <title>New Lens: Fujifilm Fujinon XF35mm F1.4 R</title>
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   <title>New Lens: Fujifilm Fujinon XF56mm F1.2 R</title>
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   <pubDate>28 May 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Panasonic Leica DG Nocticron 42.5mm F1.2 Asph Power OIS</title>
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   <title>New Lens: Panasonic Lumix G Vario 45-150mm F4.0-5.6 Asph Mega OIS</title>
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   <pubDate>27 May 2020 14:00:00 -0500</pubDate>
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   <title>New Lens: Olympus Zuiko Digital ED 300mm F2.8</title>
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   <title>New Lens: Panasonic Lumix G 14mm F2.5 II Asph</title>
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   <description>Panasonic Lumix G 14mm F2.5 II Asph.</description>
   <pubDate>27 May 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF Zoom-Nikkor 28-80mm f3.5-5.6D</title>
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   <title>New Lens: Nikon AF Zoom-Nikkor 35-80mm f/4.0-5.6D II</title>
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   <description>Nikon AF Zoom-Nikkor 35-80mm f/4.0-5.6D II.</description>
   <pubDate>26 May 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Olympus M.Zuiko Digital ED 75mm F1.8</title>
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   <description>Olympus M.Zuiko Digital ED 75mm F1.8.</description>
   <pubDate>25 May 2020 13:00:00 -0500</pubDate>
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   <title>New Lens: Olympus M.Zuiko ED 8mm F1.8 Fisheye</title>
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   <description>Olympus M.Zuiko ED 8mm F1.8 Fisheye.</description>
   <pubDate>25 May 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Olympus M.Zuiko 17mm F2.8</title>
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   <description>Olympus M.Zuiko 17mm F2.8.</description>
   <pubDate>24 May 2020 15:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Nikkor 400mm f/2.8 E FL ED VR</title>
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   <title>New Lens: Nikon PC-E Micro-Nikkor 45mm f/2.8D ED</title>
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   <title>New Lens: Nikon AI Zoom-Nikkor 360-1200mm f/11 ED</title>
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   <description>Nikon AI Zoom-Nikkor 360-1200mm f/11 ED.</description>
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   <description>Nikon AI Nikkor 200-400mm f/4S.</description>
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   <description>Nikon AF-S Nikkor 18-35mm f/3.5-4.5G ED.</description>
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   <description>Nikon AF-S Nikkor 85mm f/1.4G.</description>
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   <title>New Lens: Nikon AF Nikkor 20mm f/2.8D</title>
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   <description>Nikon AF Nikkor 20mm f/2.8D.</description>
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   <title>New Lens: Nikon AF Zoom-Nikkor 28-200mm f/3.5-5.6G IF-ED</title>
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   <description>Nikon AF Zoom-Nikkor 28-200mm f/3.5-5.6G IF-ED.</description>
   <pubDate>29 Jan 2020 14:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF Zoom-Nikkor 28-80mm f/3.3-5.6G</title>
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   <description>Nikon AF Zoom-Nikkor 28-80mm f/3.3-5.6G.</description>
   <pubDate>29 Jan 2020 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI Zoom-Nikkor 25-50mm f/4</title>
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   <description>Nikon AI Zoom-Nikkor 25-50mm f/4.</description>
   <pubDate>29 Jan 2020 12:00:00 -0500</pubDate>
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   <title>New Lens: Tamron SP AF28-75mm F/2.8 XR Di LD Aspherical (Model A09)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007075731_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron SP AF28-75mm F/2.8 XR Di LD Aspherical (Model A09).</description>
   <pubDate>20 Nov 2019 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon RF50mm F1.2 L USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20190265441_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon RF50mm F1.2 L USM.</description>
   <pubDate>18 Nov 2019 12:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 150-600mm F5-6.3 DG OS HSM Sport</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2015-203827_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 150-600mm F5-6.3 DG OS HSM Sport.</description>
   <pubDate>11 Nov 2019 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI Nikkor 35mm f/1.4S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003576360_Example01_Tale27.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI Nikkor 35mm f/1.4S.</description>
   <pubDate>10 Nov 2019 15:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI AF-S Zoom-Nikkor 80-200mm f/2.8D IF-ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2000-019398_Example01_Tale67.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI AF-S Zoom-Nikkor 80-200mm f/2.8D IF-ED.</description>
   <pubDate>10 Nov 2019 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon Nikkor-H 2.8cm f/3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP1963-026133_Example01_Tale12.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor-H 2.8cm f/3.5.</description>
   <pubDate>10 Nov 2019 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI AF Nikkor 24-120mm f/3.5-5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005734508_Example01_Tale58.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI AF Nikkor 24-120mm f/3.5-5.6.</description>
   <pubDate>10 Nov 2019 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon 'Pikaichi' L35AF 35mm f/2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004457596_Example01_Tale33.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon 'Pikaichi' L35AF 35mm f/2.8.</description>
   <pubDate>09 Nov 2019 15:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006141156_Example04_Tale35.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED.</description>
   <pubDate>09 Nov 2019 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon Zoom Nikkor 28-45mm f/4.5 (New)</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003771853_Example03_Tale15.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Zoom Nikkor 28-45mm f/4.5 (New).</description>
   <pubDate>09 Nov 2019 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon Nikkor-N 5cm f/1.1</title>
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   <description>Nikon Nikkor-N 5cm f/1.1.</description>
   <pubDate>09 Nov 2019 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Nikkor 35mm f/2.8 (New)</title>
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   <description>Nikon Nikkor 35mm f/2.8 (New).</description>
   <pubDate>08 Nov 2019 15:00:00 -0500</pubDate>
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   <title>New Lens: Nikon W-Nikkor 3.5cm f/1.8</title>
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   <description>Nikon W-Nikkor 3.5cm f/1.8.</description>
   <pubDate>08 Nov 2019 14:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Nikkor-S Auto 50mm f/1.4</title>
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   <description>Nikon Nikkor-S Auto 50mm f/1.4.</description>
   <pubDate>08 Nov 2019 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI Nikkor 200mm f/2S IF-ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004176913_Example02_Tale31.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI Nikkor 200mm f/2S IF-ED.</description>
   <pubDate>08 Nov 2019 12:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-DA 60-250mm F4 ED[IF] SDM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007489452_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-DA 60-250mm F4 ED[IF] SDM.</description>
   <pubDate>04 Nov 2019 12:00:00 -0500</pubDate>
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   <title>New Lens: Tamron SP 24-70mm F/2.8 Di VC USD</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008810918_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Tamron SP 24-70mm F/2.8 Di VC USD.</description>
   <pubDate>31 Oct 2019 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Fisheye-Nikkor 6mm f/2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003737214_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Fisheye-Nikkor 6mm f/2.8.</description>
   <pubDate>29 Oct 2019 14:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Fisheye-Nikkor 6mm f/5.6</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US003524697_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Fisheye-Nikkor 6mm f/5.6.</description>
   <pubDate>29 Oct 2019 13:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-A 135mm F1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004447137_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-A 135mm F1.8.</description>
   <pubDate>29 Oct 2019 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF Nikkor 28mm f/2.8D</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005557473_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Nikkor 28mm f/2.8D.</description>
   <pubDate>28 Oct 2019 20:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF Nikkor 400mm f/2.8D IF-ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005438455_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Nikkor 400mm f/2.8D IF-ED.</description>
   <pubDate>28 Oct 2019 19:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI Nikkor 28mm f/2.8S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005917663_Example02_Tale57.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI Nikkor 28mm f/2.8S.</description>
   <pubDate>28 Oct 2019 18:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-A 200mm F4 Macro ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004666260_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-A 200mm F4 Macro ED.</description>
   <pubDate>28 Oct 2019 17:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-DA 200mm F2.8 ED[IF] SDM</title>
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   <description>Ricoh smc Pentax-DA 200mm F2.8 ED[IF] SDM.</description>
   <pubDate>28 Oct 2019 16:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI Nikkor 50mm f/1.2S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004621909_Example03_Tale16.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI Nikkor 50mm f/1.2S.</description>
   <pubDate>28 Oct 2019 15:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI Nikkor 28mm f/1.4D</title>
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   <description>Nikon AI Nikkor 28mm f/1.4D.</description>
   <pubDate>28 Oct 2019 14:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-D FA Macro 50mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004923292_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-D FA Macro 50mm F2.8.</description>
   <pubDate>28 Oct 2019 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI AF Micro-Nikkor 105mm f/2.8S</title>
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   <description>Nikon AI AF Micro-Nikkor 105mm f/2.8S.</description>
   <pubDate>28 Oct 2019 12:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-FA 31mm F1.8 AL Limited</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006560042_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-FA 31mm F1.8 AL Limited.</description>
   <pubDate>27 Oct 2019 18:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF600mm f4L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006115188_Example22P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF600mm f4L IS USM.</description>
   <pubDate>27 Oct 2019 17:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF300mm f2.8L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006115188_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF300mm f2.8L IS USM.</description>
   <pubDate>27 Oct 2019 16:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF500mm f4L IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006115188_Example24P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF500mm f4L IS USM.</description>
   <pubDate>27 Oct 2019 15:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF400mm f2.8L IS USM</title>
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   <description>Canon EF400mm f2.8L IS USM.</description>
   <pubDate>27 Oct 2019 14:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Nikkor 400mm f/2.8D IF-ED II</title>
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   <description>Nikon AF-S Nikkor 400mm f/2.8D IF-ED II.</description>
   <pubDate>27 Oct 2019 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Micro-Nikkor 105mm f/2.8G VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007218457_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Micro-Nikkor 105mm f/2.8G VR.</description>
   <pubDate>27 Oct 2019 12:00:00 -0500</pubDate>
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   <title>New Lens: Samsung 60mm F2.8 Macro ED SSA OIS</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008203795_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Samsung 60mm F2.8 Macro ED SSA OIS.</description>
   <pubDate>26 Oct 2019 16:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax-DA 300mm F4 ED[IF] SDM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007715116_Example07P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax-DA 300mm F4 ED[IF] SDM.</description>
   <pubDate>26 Oct 2019 15:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF100mm f2.8L Macro IS USM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007864451_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF100mm f2.8L Macro IS USM.</description>
   <pubDate>26 Oct 2019 14:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Nikkor 24mm f/1.4G ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008416512_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 24mm f/1.4G ED.</description>
   <pubDate>26 Oct 2019 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Micro-Nikkor 60mm f/2.8G ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007898744_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Micro-Nikkor 60mm f/2.8G ED.</description>
   <pubDate>26 Oct 2019 12:00:00 -0500</pubDate>
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   <title>New Lens: Canon EF-M22mm f2 STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008854747_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF-M22mm f2 STM.</description>
   <pubDate>25 Oct 2019 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Canon EF40mm f2.8 STM</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008970966_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Canon EF40mm f2.8 STM.</description>
   <pubDate>25 Oct 2019 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI AF Fisheye-Nikkor 16mm f/2.8D</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005434713_Example02_Tale53.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI AF Fisheye-Nikkor 16mm f/2.8D.</description>
   <pubDate>01 Oct 2019 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF Fisheye-Nikkor 10.5mm f/2.8G ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007161746_Example09P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Fisheye-Nikkor 10.5mm f/2.8G ED.</description>
   <pubDate>01 Oct 2019 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Nikkor 28mm f/3.5</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004099850_Example05P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor 28mm f/3.5.</description>
   <pubDate>21 Sep 2019 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Nikkor 50mm f/1.4</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004448497_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon Nikkor 50mm f/1.4.</description>
   <pubDate>21 Sep 2019 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S DX Nikkor 16-80mm f/2.8-4E ED VR</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20180252903_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S DX Nikkor 16-80mm f/2.8-4E ED VR.</description>
   <pubDate>27 Dec 2018 12:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Nikkor 14-24mm f/2.8G ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007359125_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 14-24mm f/2.8G ED.</description>
   <pubDate>25 Aug 2018 14:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-S Nikkor 24-70mm f/2.8G ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US007508592_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 24-70mm f/2.8G ED.</description>
   <pubDate>25 Aug 2018 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon AF-S Nikkor 70-200mm f/2.8G ED VR II</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008416506_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-S Nikkor 70-200mm f/2.8G ED VR II.</description>
   <pubDate>25 Aug 2018 12:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Ricoh Pentax-110 50mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004289385_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh Pentax-110 50mm F2.8.</description>
   <pubDate>25 Jun 2018 13:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh Pentax-110 20-40mm F2.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004412725_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh Pentax-110 20-40mm F2.8.</description>
   <pubDate>25 Jun 2018 12:00:00 -0500</pubDate>
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  <item>
   <title>New Chapter: Depth of Field</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_18.htm</link>
   <description>Depth of Field.</description>
   <pubDate>05 Jun 2018 01:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Zhong Yi SpeedMaster 25mm F0.95</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/CN107272157_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zhong Yi SpeedMaster 25mm F0.95.</description>
   <pubDate>20 Apr 2018 12:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 150-600mm F5-6.3 DG OS HSM C</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2016-080825_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 150-600mm F5-6.3 DG OS HSM C.</description>
   <pubDate>28 Mar 2018 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Metabones Speed Booster Ultra-m43 0.71x</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008903232_Example11P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Metabones Speed Booster Ultra-m43 0.71x.</description>
   <pubDate>28 Mar 2018 12:00:00 -0500</pubDate>
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  <item>
   <title>New Chapter: Effective Aperture</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_15.htm</link>
   <description>Effective Aperture.</description>
   <pubDate>28 Mar 2018 01:00:00 -0500</pubDate>
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  <item>
   <title>New Chapter: Teleconverters</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_17.htm</link>
   <description>Teleconverters.</description>
   <pubDate>26 Mar 2018 01:00:00 -0500</pubDate>
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   <title>New Lens: Metabones Canon EF Lens to Sony E Mount T Speed Booster Ultra 0.71x</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008879901_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Metabones Canon EF Lens to Sony E Mount T Speed Booster Ultra 0.71x.</description>
   <pubDate>24 Mar 2018 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Metabones M43 Speed Booster 0.71x</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008879901_Example04P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Metabones M43 Speed Booster 0.71x.</description>
   <pubDate>24 Mar 2018 13:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI Nikkor 50mm f/1.2S with Metabones M43 Speed Booster 0.71x</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US008879901_Example04PP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI Nikkor 50mm f/1.2S with Metabones M43 Speed Booster 0.71x.</description>
   <pubDate>24 Mar 2018 12:00:00 -0500</pubDate>
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  <item>
   <title>New Chapter: Focal Reducers</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_16.htm</link>
   <description>Focal Reducers.</description>
   <pubDate>24 Mar 2018 01:00:00 -0500</pubDate>
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  <item>
   <title>New Chapter: Close-up Lenses</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_14.htm</link>
   <description>Close-up Lenses.</description>
   <pubDate>23 Mar 2018 01:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax 6x7 Macro 100mm f4.0 with Life Size Converter</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006002533_Example03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax 6x7 Macro 100mm f4.0 with Life Size Converter.</description>
   <pubDate>22 Mar 2018 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Ricoh smc Pentax Life Size Converter 6x7 for smc 6x7 Macro 100mm f4.0</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006002533_AL03P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax Life Size Converter 6x7 for smc 6x7 Macro 100mm f4.0.</description>
   <pubDate>22 Mar 2018 13:00:00 -0500</pubDate>
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   <title>New Lens: Ricoh smc Pentax 6x7 Macro 100mm f4.0</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US006002533_MLP.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Ricoh smc Pentax 6x7 Macro 100mm f4.0.</description>
   <pubDate>22 Mar 2018 12:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Batis 2.8 / 18</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2016-188967_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Batis 2.8 / 18.</description>
   <pubDate>21 Mar 2018 12:00:00 -0500</pubDate>
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   <title>New Lens: Zeiss Batis 1.8 / 85</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2015-096915_Example02P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Zeiss Batis 1.8 / 85.</description>
   <pubDate>20 Mar 2018 12:00:00 -0500</pubDate>
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   <title>New Lens: Olympus M.Zuiko 25mm F1.8</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2015-075501_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Olympus M.Zuiko 25mm F1.8.</description>
   <pubDate>19 Mar 2018 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20180319_1200</guid>
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  <item>
   <title>New Chapter: More on the Pupils</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_10.htm</link>
   <description>More on the Pupils.</description>
   <pubDate>16 Mar 2018 02:00:00 -0500</pubDate>
   <guid isPermaLink="false">20180316_0200</guid>
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  <item>
   <title>New Chapter: Zoom Lenses</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_13.htm</link>
   <description>Zoom Lenses.</description>
   <pubDate>16 Mar 2018 01:00:00 -0500</pubDate>
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   <title>New Lens: Sigma 100-400mm F5-6.3 DG OS HSM C</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2017-223778_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Sigma 100-400mm F5-6.3 DG OS HSM C.</description>
   <pubDate>09 Mar 2018 12:00:00 -0500</pubDate>
   <guid isPermaLink="false">20180309_1200</guid>
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  <item>
   <title>New Chapter: Distance</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_07.htm</link>
   <description>Distance.</description>
   <pubDate>26 Feb 2018 02:00:00 -0500</pubDate>
   <guid isPermaLink="false">20180226_0200</guid>
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  <item>
   <title>New Chapter: F-number and Numerical Aperture</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_11.htm</link>
   <description>F-number and Numerical Aperture.</description>
   <pubDate>26 Feb 2018 01:00:00 -0500</pubDate>
   <guid isPermaLink="false">20180226_0100</guid>
  </item>
  <item>
   <title>New Chapter: Focusing by Extension</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_03.htm</link>
   <description>Focusing by Extension.</description>
   <pubDate>25 Feb 2018 03:00:00 -0500</pubDate>
   <guid isPermaLink="false">20180225_0300</guid>
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  <item>
   <title>New Chapter: Magnification</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_04.htm</link>
   <description>Magnification.</description>
   <pubDate>25 Feb 2018 02:00:00 -0500</pubDate>
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  <item>
   <title>New Chapter: Focusing by Lowering Focal Length</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/Optics_Primer/Optics_Primer_12.htm</link>
   <description>Focusing by Lowering Focal Length.</description>
   <pubDate>25 Feb 2018 01:00:00 -0500</pubDate>
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   <title>New Lens: Nikon TC-1</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004154508_Example11_Tale73.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon TC-1.</description>
   <pubDate>08 Feb 2018 18:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF-I Teleconverter TC-20E</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005253112_RCL01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF-I Teleconverter TC-20E.</description>
   <pubDate>08 Feb 2018 17:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AI AF Micro-Nikkor 60mm f/2.8S</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005751485_Example01_Tale74.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI AF Micro-Nikkor 60mm f/2.8S.</description>
   <pubDate>08 Feb 2018 16:00:00 -0500</pubDate>
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   <title>New Lens: Nikon AF Micro-Nikkor 60mm f/2.8D</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005751485_Example01P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Micro-Nikkor 60mm f/2.8D.</description>
   <pubDate>08 Feb 2018 15:00:00 -0500</pubDate>
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   <title>New Lens: Nikon Micro-Nikkor 105mm f/2.8</title>
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   <description>Nikon Micro-Nikkor 105mm f/2.8.</description>
   <pubDate>08 Feb 2018 14:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon AF Micro-Nikkor 200mm f4D IF-ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US005751485_Example09P.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AF Micro-Nikkor 200mm f4D IF-ED.</description>
   <pubDate>08 Feb 2018 13:00:00 -0500</pubDate>
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  <item>
   <title>New Lens: Nikon AI Nikkor 180mm f/2.8 ED</title>
   <link>https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US004338001_Example02_Tale10.txt,figureOpacity=0.25,AxisO,OffAxis</link>
   <description>Nikon AI Nikkor 180mm f/2.8 ED.</description>
   <pubDate>08 Feb 2018 12:00:00 -0500</pubDate>
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