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Lens review

Sony E PZ 10-20 mm f/4 G

6 June 2022
Maciej Lata││o

7. Coma, astigmatism and bokeh

The Sony PZáEá10–20ámm f/4áG doesn't have any serious problems with coma correction. In the frame corner the point-like image of a diode changes into a slight comma but the effect is not especially pronounced. What's important, a similar performance can be observed for all focal lengths.

A7R III, 10ámm, f/4.0, center A7R III, 10ámm, f/4.0, Corner
Sony E PZ 10-20 mm f/4 G - Coma, astigmatism and bokeh Sony E PZ 10-20 mm f/4 G - Coma, astigmatism and bokeh
A7R III, 15ámm, f/4.0, center A7R III, 15ámm, f/4.0, Corner
Sony E PZ 10-20 mm f/4 G - Coma, astigmatism and bokeh Sony E PZ 10-20 mm f/4 G - Coma, astigmatism and bokeh
A7R III, 20ámm, f/4.0, center A7R III, 20ámm, f/4.0, Corner
Sony E PZ 10-20 mm f/4 G - Coma, astigmatism and bokeh Sony E PZ 10-20 mm f/4 G - Coma, astigmatism and bokeh


When it comes to astigmatism, understood as an average difference between horizontal and vertical MTF50 function values, it is 10.2%, a result on the borderline between low and medium levels. You should also add that this aberration is a tad higher in the 10-15 mm range and the lowest at the maximum focal length.


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You have to admit out-of-focus images provided by the Sony 10-20 mm aren't the most pleasing to the eye; still nobody expects a lens with such parameters to produce nice blurr or creative DOF play.

A7R III, 20ámm, f/4.0, center A7R III, 20ámm, f/4.0, Corner
Sony E PZ 10-20 mm f/4 G - Coma, astigmatism and bokeh Sony E PZ 10-20 mm f/4 G - Coma, astigmatism and bokeh
A7R III, 20ámm, f/5.6, center A7R III, 20ámm, f/5.6, Corner
Sony E PZ 10-20 mm f/4 G - Coma, astigmatism and bokeh Sony E PZ 10-20 mm f/4 G - Coma, astigmatism and bokeh
A7R III, 20ámm, f/8.0, center A7R III, 20ámm, f/8.0, Corner
Sony E PZ 10-20 mm f/4 G - Coma, astigmatism and bokeh Sony E PZ 10-20 mm f/4 G - Coma, astigmatism and bokeh