Sigma 70-200mm F2.8 DG DN OS Sports Review
December 7, 2023
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Mark Goldstein
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Sharpness at 70mm
For this test, the Sigma 70-200mm F2.8 DG DN OS Sports lens was attached to a Sony A7C II body, which was in turn mounted to a sturdy tripod. Exposure delay mode was activated. Tonal and colour variance across the crops are due to change in natural light during the session.
![The full frame](/images/photographyblog/1x1-grey.gif)
The full frame at 70mm
Center sharpness is outstanding between f/2.8 and f/11. At f/16 and especially f/22 sharpness drops off due to diffraction.
Edge sharpness is almost as good as in the centre, with the sharpest results between f/4 and f/11.
Aperture | Centre Crop | Edge Crop |
f/2.8 | ![]() |
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f/4 | ![]() |
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f/5.6 | ![]() |
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f/8 | ![]() |
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f/11 | ![]() |
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f/16 | ![]() |
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f/22 | ![]() |
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