Analysis of
Minimum F-stop for the Sigma 150-500mm
Prepared 2008-07-02 (156/25421) by Bill Claff
Something I always measure this for my zoom lenses.
Analysis of
Minimum F-stop for the Sigma 150-500mm
Prepared 2008-07-02 (156/25421) by Bill Claff
Something I always measure this for my zoom lenses.