Sigma 120-300mm F2.8 DG OS HSM S Review

March 14, 2014 | Mark Goldstein | |

Sharpness at 120mm

For this test, the Sigma 120-300mm F2.8 DG OS HSM S lens was attached to a Canon EOS 5D Mark III 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 120mmThe full frame at 120mm

Centre sharpness is commendably good wide-open at f/2.8. Both centre and edge sharpness remain high through from f/4 to f/16, with f/22 being adversely affected by diffraction.

Aperture Centre Crop Edge Crop
f/2.8 f2_8.jpg f2_8.jpg
f/4 f4.jpg f4.jpg
f/5.6 f5_6.jpg f5_6.jpg
f/8 f8.jpg f8.jpg
f/11 f11.jpg f11.jpg
f/16 f16.jpg f16.jpg
f/22 f22.jpg f22.jpg