Sigma 24mm F2 DG DN Review
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Sharpness at 24mm
The sharpness tests for this review were carried out using a real-world subject rather than a test chart. The Sigma 24mm F2 DG DN lens was attached to a Sony A7 III camera body, which in turn was mounted on a sturdy tripod. Self-timer mode was activated. Slight tonal changes are due to slight changes in natural light during the session.
![The full frame](/images/photographyblog/1x1-grey.gif)
The full frame at 24mm
The centre is very sharp even when shooting wide open, so you can happily use f/2-f/11. Diffraction sets in at at f/16 and especially f/22.
The edges aren't quite as sharp as the centre, being just a little soft at f/2, with f/4-f/11 the optimum settings.
Aperture | Centre Crop | Edge Crop |
f/2 | ![]() |
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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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