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Forums > Back > next PZ lens test report: Sigma 85mm f/1.4 DG HSM ART
Brightcolours
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#14
02-22-2017, 03:56 PM
Quote:Klaus, I have a question about CA. in your report of the lens you state a CA of 0.5 pixel at f/1.4.

 

Pixelwidth means "related to sensor"? And which sensor was in use to measure that width? On the samples of DPReview were a couple of pics which had solid magenta highlights. Is that an overloaded sensor or related to the lens?
The software measures on diagonals, so it can indeed see "half". However, it is not the most reliable measurement from the software.

The magenta you see in high lights is of the LoCA variety,, the CA from the graph is of the LaCA variety.
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Messages In This Thread
next PZ lens test report: Sigma 85mm f/1.4 DG HSM ART - by Brightcolours - 02-22-2017, 03:56 PM
next PZ lens test report: Sigma 85mm f/1.4 DG HSM ART - by davidmanze - 03-18-2017, 03:46 AM

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