|
Imaging Brightness Variation 130mm Triplet APO f7 or f6.5
Whilst there are quite a few tools to calculate the difference in FoV, is there a formula to calculate the percentage difference in brightness between these to focal ratios?
Sensors that will be used are KAF8300 (5.4 microns) and MN34230 (3.8 microns).
Thanks
Mark
|