Tamron 17-70mm F/2.8 Di III-A VC RXD Review

February 10, 2021 | Mark Goldstein |

Sharpness at 17mm

Our sharpness tests are carried out by photographing a real-world subject rather than a test chart. The Tamron 17-70mm F/2.8 Di III-A VC RXD was attached to a Sony A6000 camera, which in turn was mounted on a sturdy tripod. Self-timer mode was activated to steady the camera completely. Any slight tonal changes you may see across the crops are a result of slight changes in natural light during the shooting session.

The full frame

The full frame at 17mm

Centre sharpness remains impressively high through from f/2.8-f/11, with f/16 and f/22 being affected by diffraction.

The edges aren't quite as sharp as the centre, with f/4-f/11 producing the sharpest results.

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 f16.jpg f16.jpg