Quote:
Originally Posted by Spookyer
Ok guys, the front element is 77mm across, what sort of size do you suggest for the hole in the aperture mask?
Brett
|
First of all I would go to the Photozone website which shows tests on the lens.
http://www.photozone.de/nikon_ff/456..._28_ff?start=1
If you look at the MTF test you will find the "sweet spot" for lens performance is more or less at f/5.6 over the entire FL range for the 8300 chip.
Hence the the diameter of your aperture mask is simply the focal length divided by 5.6
Regards
Steven