
Typically when we hear the lens is too sharp, macro lenses are the first to come to mind at least for me they are. Yet the 50/1.4 and even as you mentioned the 28/1.8 score an absolute higher value than any of the macro lenses on FF over at photozone. Yet both lenses are weak wide open and in the corners and I wouldn't concider either too sharp. However, in a studio where one is stopped down to max sharpness with a subject in the center of the frame, both perform brilliantly.
Agreed. I have both, and both are quite good.