35 GM received. Perfectly centered. Compared to my 2 Sigmas, where one needs to go:
Sigma has significantly stronger field curvature (focusing on the corners equalizes sharpness more, but still with a visible advantage for the Sony).
Sharpness in the central region is very close, need to go to 200% to see differences,so not the difference lenstip or cameralabs showed.
The Sigma has shallower DOF at the same aperture, but the Sigma also is clearly not 35mm (106.4% magnification of the Sony yields the same size, so 37.4mm focal length if I calculated it right).
Getting closer to account for the difference, the Sony is slightly sharper, but not 69.7 lp/mm vs. 55 lp/mm, as lenstip shows.
The Sony shows similar levels of CAs in the mangenta parts of the frame, but much less CAs in the green CA part. Very big difference, here.
Much less flare prone, too. The copy we had as loan from Sony was similarly good, so certainly not an outlier.
Mar 20, 2021 at 03:22 AM
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