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Lens review

Sigma A 28 mm f/1.4 DG HSM

21 January 2019
Maciej Lata³³o

6. Distortion

The chart below presents results in the distortion category of different full frame 28 mm lenses, previously tested by us.


Sigma
A 1.4/28
Zeiss
Otus 1.4/28
Nikkor
AF-S 1.4/28
Nikkor
AF-S 1.8/28
Voigtlander
Skopar 2.8/28
Canon
EF 1.8/28
APS-C/DX
−0.19%
−0.67%
−0.69%
−0.86%
−0.99%
−1.19%
FF
−0.86%
−1.39%
−1.12%
−1.13%
−1.54%
−1.85%


It’s clear the Sigma wins here hands down, being better not only than the older constructions like the Canon EF 1.8/28 but also prevailing over the new, optically complex instruments represented by the Otus and the Nikkor. As a result on the smaller APS-C/DX sensor you won’t notice distortion at all because a value of −0.19% is in accordance with zero within the margin of error. The aberration slightly increases to −0.86% on full frame but even such a result should be called slight. A round of applause for Sigma constructors.

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Canon 50D, 28 mm
Sigma A 28 mm f/1.4 DG HSM - Distortion
Canon 5D MkIII, 28 mm
Sigma A 28 mm f/1.4 DG HSM - Distortion