Canon EF 70-200mm F4L IS II USM Review

May 31, 2019 | Mark Goldstein |

Canon EF 70-200mm F4L IS II USM Sharpness at 135mm

The sharpness tests for this review were carried out using a real-world subject rather than a test chart. The Canon EF 70-200mm F4L IS II USM lens was attached to a Canon EOS 5DS R 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 135mm

Both center and edge sharpness are excellent at f/4 and outstanding between f/5.6 and f/11. At f/16 sharpness is beginning to drop off due to diffraction, becoming much more prominent at f/22 and f/32.

Aperture Centre Crop Edge Crop
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
f/32 f32.jpg f32.jpg