Sigma 17-70mm F2.8-4 DC Macro OS HSM C Review

4.5
March 13, 2014 | Mark Goldstein |

Sharpness at 70mm

For this test, the Sigma 17-70mm F2.8-4 DC Macro OS HSM lens was attached to a Canon EOS 70D body, which in turn was mounted on a sturdy tripod. Exposure delay mode was activated. Tonal and colour variances across the crops are due to changes in natural light during the session.

The full frame at 70mmThe full frame at 70mm

Centre sharpness is high through from f/5.6 to f/11, with f/16 and f/22 being adversely affected by diffraction. The edges aren't quite as sharp as the centre, with f/8-11 producing the sharpest results.

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

Entry Tags

review, lens, nikon, sony, canon, f2.8, pentax, sigma, aps-c, f4, dx, 17-70mm, sigma 17-70mm, Sigma 17-70mm F2.8-4 DC Macro OS HSM C Review, 25-105mm, 4.1x

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