Image quality, vignetting, and distortion test results along with specs, measurements, and standard product images are now available on the Sigma 20mm F2 DG DN Contemporary Lens page.
Here are some comparisons to get you started:
Compared to the Sony FE 20mm F1.8 G Lens
Compared to the Sigma 20mm F2 DG DN Contemporary Lens
Order the Sigma 20mm F2 DG DN Contemporary Lens from B&H | Adorama | WEX
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