Sigma 30mm F1.4 DC A Review

March 12, 2014 | Mark Goldstein | |

Sharpness at 30mm

For this test, the Sigma 30mm F1.4 DC A 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 30mmThe full frame at 30mm

Centre sharpness remains high through from f/1.8 to f/11, with f/16 being adversely affected by diffraction. The edges aren't nearly as sharp as the centre, with f/4-11 producing the sharpest results.

Aperture Centre Crop Edge Crop
f/1.4 f1_4.jpg f1_4.jpg
f/1.8 f1_8.jpg f1_8.jpg
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