[quote name='Brightcolours' timestamp='1303201586' post='7756']
There is no field curvature worth mentioning (tested it just now). I think you may confuse some coma like effect, or more probably astigmatism, with field curvature?
Your 60mm AF-S has quite strong CA, just your camera is hiding it. Try a 3rd party RAW convertor to see how it really performs. The still quite low CA from the 55mm f2 can also be easily reigned in in a RAW convertor that allows you to correct CA, or in photoshop (in for instance the lens correction filter).
[/quote]
[quote name='Brightcolours' timestamp='1303201586' post='7756']
There is no field curvature worth mentioning (tested it just now). I think you may confuse some coma like effect, or more probably astigmatism, with field curvature?
Your 60mm AF-S has quite strong CA, just your camera is hiding it. Try a 3rd party RAW convertor to see how it really performs. The still quite low CA from the 55mm f2 can also be easily reigned in in a RAW convertor that allows you to correct CA, or in photoshop (in for instance the lens correction filter).
[/quote]
Here are the 2/55UMN at f/2 and the 60mm AFS at 2,8, both at 1:1.
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.
[quote name='Brightcolours' timestamp='1303408041' post='7823']
If that suspicion is correct, then this lens is best used close to its designed focus distance, to get most out of it.
[/quote]
Yes, I think this lens has its best results at 1:4. Unfortunately I can only get 1:3 with a thin adapter because of the FFD of Nikon. Reversed on FX at 4:1 here at f/2, f/2,8 and f/4.