>>3251181The whole point is to strike in the last 30 seconds. If you don't strike last minute you're driving the price up for everyone.
Also don't buy nip lenses unless they're on the cheaper side. You'll get stung with $100 import duties for nothing.
I tried to find a picture which was representative of a use scenario while still being useful to draw resolution conclusions from. This is 35mm at 5.6 on a 5DMII (21mp.) I don't have any wide angle pictures wide open with a flat image plane where I can point out the corners are ok really because if the composition / lighting demanded a wide aperture, the corners are practically guaranteed outside the plane of focus.