Sharpness at 35mm

The sharpness tests for this review were carried out using a real-world subject rather than a test chart. The Sigma 35mm 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 at 35mm

The centre is slightly soft wide open at f/2, with the peak performance achieved in the f/2.8-f/11 range. Diffraction sets in at at f/16 and especially f/22.

The edges are similarly slightly soft at f/2, sharpening up at f/2.8, with f/4-f/11 the optimum settings.

Aperture	Centre Crop	Edge Crop
f/2
f/2.8
f/4
f/5.6
f/8
f/11
f/16
f/22