07-11-2020, 10:00 AM
(07-10-2020, 08:12 AM)Klaus Wrote: I'm a little puzzled by those MTFs, to be honest.
These are almost as good as for the old 200mm f/2.8L. I have a hard time believing that a f/11 lens is as good as an f/2.8 lens. But let's see ...
MTF are usually provided wide open. The only exception I can think of, is Zeiss - they provide additional MTFs at F4 or F5.6. If I remember correctly, their MTFs are also measured, not theoretical (I would not mind more Zeiss reviews :
) In addition, focal length is 3x or 4x in mm, so MTF should be higher, if following the rule of thumb.
You just can't have too many lenses...