Tamron 70-180mm F/2.8 Di III VXD Review

June 3, 2020 | Mark Goldstein |

Sharpness at 135mm

The sharpness tests for this review were carried out using a real-world subject rather than a test chart. The Sony E 70-3135mm F4.5-6.3 G OSS lens was attached to a Sony Alpha A7 III body, which in turn was mounted on a sturdy tripod. Self-timer mode was activated. Slight tonal changes are due to slight changes in natural light during the session.

The full frame

The full frame at 135mm

Center sharpness is very good wide open at f/2.8 and excellent between f/4 and f/11. At f/16 to f/22 sharpness across the frame is beginning to drop-off due to diffraction. Edge sharpness isn't quite as good, with f/5.6 to f/11 producing the best results.

Aperture Centre Crop Edge Crop
f/2.8 f5_6.jpg f5_6.jpg
f/4 f5_6.jpg f5_6.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