Click on the camera model in list to toggle that camera's visibility.
For additional details mouse over the data points and click on the camera in the legend.
Zooming is enabled.
The open circles are Measured ISO values from DxoMark ISO Sensitivity charts.
The closed circles are from an automatic fit that uses a heuristic to omit "lo" and "hi" ISO data that do not conform.
The omitted ISO values are often, but not always, the "lo" and "hi" ISO setting for that camera.
The Native ISO Setting may not be correct if extended low ISO settings were not tested (eg. Nikon D300).
DxOMark ISO Sensitivities
DxOMark ISO sensitivity definition (DxOMark site)
DxOMark ISO sensitivity test protocol(DxOMark site)