Zeiss Apo Sonnar T* 2/135 ZE Canon mount lens review: Ultra-high performerBy Kevin Carter - Tuesday January 14 2014 Lens Review
Carl Zeiss Apo Sonnar T* 2/135 ZE Canon lens performance: Ultra-high performance
The Zeiss Sonnar T* 2/135 achieves an excellent DxOMark score of 38 points putting in first place in our rankings of fixed focal length telephoto lenses on the Canon EOS 5D Mk III in our database. It also achieves the highest peak sharpness of 22P-Mpix, suggesting that it can out-resolve the 22-Mpix sensor in the EOS 5D Mk III. Sharpness is excellent across the frame at the initial aperture and levels improve slightly upon stopping down.
The optical quality is outstanding at any aperture up to f11 (where after diffraction effects occur). Vignetting at 1.5 Ev is at expected levels as is the very low distortion, however the control of lateral chromatic aberration is exceptional.
Transmission at 2T-stops is also remarkable.