Carl Zeiss Apo Sonnar T* 135 mm f/2.0 ZE/ZF.2 review - Vignetting

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Carl Zeiss Apo Sonnar T* 135 mm f/2.0 ZE/ZF.2

3 November 2013

Arkadiusz Olech

8. Vignetting

First let’s check the performance of the tested lens on the APS-C/DX sensor of the Nikon D7000. The appropriate thumbnails are presented below.

Carl Zeiss Apo Sonnar T* 135 mm f/2.0 ZE/ZF.2 - Vignetting

You can notice that the vignetting is not a big problem. Only at the maximum relative aperture its level can be called moderate as its value we assessed as 20% (-0.66 EV). On stopping down to f/2.8 it decreases to an imperceptible level of 5% (-0.14 EV) so the problem practically disappears.

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Let’s check how the tested lens fares on the full frame sensor of the Nikon D3x.

There are a bit more problems here; still they cannot be called serious. At the maximum relative aperture the brightness loss in the frame corners amounts to 38% (-1.38 EV). That aberration becomes moderate already by f/2.8, where it reaches 22% (-0.70 EV) and imperceptible by f/4.0, where it amounts to just 8% (-0.23 EV).