That's not my observation with the short nose version of the 50/1.8, but I have yet to test the long nose version (in my case, an earlier AI).
Why not a large brick wall like the side of a building as apposed to a garden Wall? We on "The Ring of Fire" don't have large brick walls like the side of a building as such buildings fall down when the earth moves.
My pick many years ago was a 50/1.8 AI over a 50/1.4 AI as I found the f/1.8 was better wide open than the f/1.4 was at f/2.0.
I have now been out shooting walls
I will not bother you with the pictures.
My findings so far are that my long nose has a centering problem as pointed out by "pluton".
The f1.4 is not useful at f1.4, but at f2.0 it is as good as the short nose 1.8, it is a close call on which is best from f2.0,but maybe the f1.4 wins by a hair
I will later find a place to make better far field photos, as the intend use is allround, portrait and landscape.
My latest test was done with liveview focus on a tripod and a remote control (wired), there may be a slight difference in the focus indicator and what looks in focus in liveview.
The input here has been very useful and helpful.
Br Bent
