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

March 14, 2014 | Mark Goldstein | |

Sharpness at 300mm

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 300mmThe full frame at 300mm

Both centre and edge sharpness remain high through from f/4 to f/8, with f/11-f/22 being adversely affected by diffraction.

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

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