Sigma 150-600mm F5-6.3 DG DN OS Sports Review

September 10, 2021 | Mark Goldstein | Rating star Rating star Rating star Rating star Rating star

Sharpness at 500mm

Our sharpness tests are carried out by photographing a real-world subject rather than a test chart. The Tamron 150-500mm F5-6.7 Di III VC VXD was attached to a Sony Alpha A7 III 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 500mm

At both the the centre and the edges of the image, sharpness is a little soft at the maximum aperture, sharpening up at f/8.

It maintains that level of sharpness until f/22, where it remains excellent but is ever-so-slightly softer due to diffraction.

Aperture Centre Crop Edge Crop
f/6.3 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
f/29 f16.jpg f16.jpg