2016-08-10, with Sony A7 and Contax G Carl Zeiss Biogon 28mm f/2.8.

The lens has a stellar reputation, but not on digital. IMHO the trick is, to use a mirrorless camera for digital (where you can check while making a photo what and where it’s sharp) and full frame and then to use the characteristics of the lens to your advantage. What turns out to be less sharp in the corner might just be very pronounced field curvature. Now field curvature has a bad reputation as well, but think about it, that’s also just because of the “wrong” cameras historically being used:).