Zeiss Milvus 21mm f/2.8 Review

December 1, 2015 | Mark Goldstein |

Sharpness at 21mm

Our sharpness tests were conducted using a 50-megapixel Canon EOS 5DS R body mounted to a tripod. The camera's shutter release was also set on a timer-delay to avoid any possible camera shake. The test subject was shot using ambient lighting, hence some colour and contrast variation is to be expected between apertures.

The full frame at 16mmThe full frame at 21mm

Centre sharpness is high right throughout the entire aperture range, with peak performance between f/4-f/11. F/16 and f/22 are marred slightly by diffraction. At the edges, peak performance is again achieved between f/4-f/11.

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