Zeiss Otus 55mm f/1.4 Distagon T* Review

November 17, 2015 | Mark Goldstein |

Sharpness at 55m

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 55mm

Both centre and edge sharpness are incredibly high right throughout the entire aperture range, with peak performance between f/2-f/11. Only f/16 is marred slightly by diffraction.

Aperture Centre Crop Edge Crop
f/1.4 f1_4.jpg f1_4.jpg
f/2 f2.jpg f2.jpg
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