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Lens review

Sony Carl Zeiss Vario-Sonnar T* DT 16-80 mm f/3.5-4.5

25 August 2009
Szymon Starczewski

7. Coma and astigmatism


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The coma influence on the almost spot picture of a diode is perceptible at all focal lengths. The level of this aberration is medium, though and we can’t criticize the lens for it.

Sony Carl Zeiss Vario-Sonnar T* DT 16-80 mm f/3.5-4.5 - Coma and astigmatism

It’s a bit better in the case of astigmatism – it’s average value is 6.9% and it’s very similar to the result of the Sigma 17-70 and the Canon 17-85; it’s better than the result of the Nikkor 18-70.