Carl Zeiss Vario-Tessar T E 16-70mm f/4 ZA OSS Review

March 21, 2014 | Mark Goldstein | |

Sharpness at 70mm

For this test, the Carl Zeiss Vario-Tessar T E 16-70mm f/4 ZA OSS lens was attached to a Sony NEX-7 body, which in turn was mounted on a sturdy tripod. Exposure delay mode was activated. Tonal and colour variances across the crops are due to changes in natural light during the session.

The full frame at 70mmThe full frame at 70mm

Centre sharpness remains high through from f/5.6 to f/11, with f/16 and f/22 being adversely affected by diffraction. The edges are almost as sharp as the centre, with f/5.6 to f/11 again producing the sharpest results.

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