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Forums > Back > next PZ lens test report - Sigma 14mm f/1.8 DG HSM ART
Brightcolours
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#17
11-20-2017, 11:01 PM
Field curvature certainly does not have to be the same at different focus distances.

 

Case in point:

http://forum.opticallimits.com/index.php...-f2/page-2

 

Hence,  the Sigma showing noticable field curvature at testing distance, but less or no noticable field curvature at infinity is a possibility.

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Messages In This Thread
next PZ lens test report - Sigma 14mm f/1.8 DG HSM ART - by davidmanze - 11-19-2017, 10:25 AM
next PZ lens test report - Sigma 14mm f/1.8 DG HSM ART - by Brightcolours - 11-20-2017, 11:01 PM
next PZ lens test report - Sigma 14mm f/1.8 DG HSM ART - by davidmanze - 11-21-2017, 03:29 PM
next PZ lens test report - Sigma 14mm f/1.8 DG HSM ART - by davidmanze - 11-22-2017, 04:45 PM
next PZ lens test report - Sigma 14mm f/1.8 DG HSM ART - by davidmanze - 12-11-2017, 08:10 AM
next PZ lens test report - Sigma 14mm f/1.8 DG HSM ART - by davidmanze - 12-11-2017, 11:10 AM

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