Canon RF 15-35mm F2.8L IS USM Review

November 14, 2019 | Amy Davies |

Sharpness at 35mm

The sharpness tests for this review were carried out using a real-world subject rather than a test chart. The Canon RF 15-35mm F2.8L IS USM lens was attached to a Canon EOS RP 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 frameThe full frame at 35mm

Central sharpness at the widest aperture of f/2.8 is good, but it is noticeably sharper when viewing at 100% when you get to f/4. It’s a little sharper again at f/5.6 and stays roughly the same at f/8 and f/11. Sharpness drops off a little bit at f/16 and f/22, but the overall impression of sharpness again remains good at normal printing and web sizes. At the corners, sharpness is best between f/8 and f/16.

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 f22.jpg f22.jpg