Sigma 70mm f/2.8 DG Macro Art Review
June 25, 2018
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Mark Goldstein
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Sharpness at 70mm
For these sharpness tests the Sigma 70mm f/2.8 DG Macro Art lens was attached to a Canon EOS 5DS R body, which in turn was mounted on a sturdy tripod. Slight tonal changes are due to slight changes in natural light during the session.
The full frame at 70mm
The centre is very sharp, even wide-open at f/2.8, with peak performance achieved in the f/4-f/11 range. Diffraction is only really noticeable at f/22.
The edges are slightly soft at f/2.8, sharpening up sufficiently at f/4, with f/5.6-f/11 the optimum aperture range.
Aperture | Centre Crop | Edge Crop |
f/2.8 | ||
f/4 | ||
f/5.6 | ||
f/8 | ||
f/11 | ||
f/16 | ||
f/22 |