At what aperture did it become “terrible” in your estimation? And do you still have the files that you can share?
- - -
In my estimation it was terrible stopped all the way down. I would say it was bad even opened up one stop. It was surprising for a GM lens. I'll post photos if I have time.
"Stopped all the way down on that lens is f/23. No one shoots a FF camera at f/32 except in truly unusual circumstances in which DOF is important and image sharpness is not. There is _normally_ a LOT of diffraction blur at f/32 on any lens on a FF camera. f/22 will also normally be quite soft.
I personally avoid shooting a high res FF camera at f/16 unless I'm willing to intentionally sacrifice detail for DOF.
This is not a lens flaw. It is how optics work.
Jul 02, 2026 at 10:27 PM
Previous versions of gdanmitchell's message #17065476 « Sony 100-400 f/4.5 »
