LensTip.com

Lens review

Voigtlander Nokton 25 mm f/0.95

14 December 2010
Arkadiusz Olech

7. Coma and astigmatism


- - - - - - - - - - - - - - - - - advertisement - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Very fast lenses often have a lot of coma-related issues and the Voigtlander is not an exception to this rule. The level of this aberration is really huge and on stopping down to f/1.4 we don’t see almost any improvement – the coma more or less keeps the same level.

Voigtlander Nokton 25 mm f/0.95 - Coma and astigmatism

When it comes to astigmatism the lens performs much better. It is perhaps not corrected in a perfect way but certainly well enough - the average difference between horizontal and vertical MTF50 function values amounted to 6.8%.