Canon EF 24-105mm f/3.5-5.6 IS STM Review

January 14, 2015 | Mark Goldstein |

Sharpness at 24mm

The sharpness tests for this review were carried out using a real-world subject rather than a test chart. The Canon EF 24-105mm f/3.5-5.6 IS STM lens was attached to a Canon 5D Mark 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 frameThe full frame at 24mm

Center and edge sharpness are both excellent wide open at f/3.5 and outstanding between f/4 and f/8. At f/11 and f/16 sharpness across the frame is beginning to drop-off a little due to diffraction, but is still commendably high. F/22 is best avoided.

Aperture Centre Crop Edge Crop
f/3.5 f3_5.jpg f3_5.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