04-21-2011, 05:47 PM
(This post was last modified: 04-21-2011, 05:48 PM by Brightcolours.)
[quote name='karlmera' timestamp='1303407189' post='7822']
Here 2 tests on FX, 2/55 and 60AFS, both at 1:1.
[/quote]
I have the suspicion that you pushing it to 1:1 (I can't go past 1:1.45 at the moment) is the culprit here. On FF I see almost no field curvature at 1:2, and I start to see more at 1:1.45.
If that suspicion is correct, then this lens is best used close to its designed focus distance, to get most out of it. I will not be in a position to test it reversed (nor is 28mm f1,8 brother) for quite some time still.
ps: I can't show the FF results, as I checked through the viewfinder of a film SLR.
Here 2 tests on FX, 2/55 and 60AFS, both at 1:1.
[/quote]
I have the suspicion that you pushing it to 1:1 (I can't go past 1:1.45 at the moment) is the culprit here. On FF I see almost no field curvature at 1:2, and I start to see more at 1:1.45.
If that suspicion is correct, then this lens is best used close to its designed focus distance, to get most out of it. I will not be in a position to test it reversed (nor is 28mm f1,8 brother) for quite some time still.
ps: I can't show the FF results, as I checked through the viewfinder of a film SLR.