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Forums > Back > next PZ lens test report: Canon EF 20mm f/2.8 USM
Klaus
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#4
10-23-2012, 07:43 AM
[quote name='Rover' timestamp='1350976510' post='20685']

The second resolution chart was the oddest one I've ever seen.

[/quote]



That is the nature of field curvature. Interestingly it (the field curvature) gets worse the more you stop down thus resulting in this roller-coaster ride.



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next PZ lens test report: Canon EF 20mm f/2.8 USM - by Klaus - 10-23-2012, 07:43 AM

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