LensTip.com

Lens review

Canon EF 40 mm f/2.8 STM

7 August 2012
Szymon Starczewski

6. Distortion


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The distortion level of the tested lens is a nice surprise as well. No matter whether you use a smaller or a bigger sensor, you won’t complain about geometric deformations. In the first case we measured slight barrel distortion of -0.41% and in the second case its value was -0.72%.

Other producers of mirrorless systems, which „pancakes” manage distortion rather badly, should take a leaf out of the Canon’s book. It’s enough to remind you here the result of the Panasonic 1.7/20 (with the same angle of view as the tested Canon) which was as high as -3.66%. It is clear that you can correct the distortion well using the optics and the software of a camera doesn’t have to be burdened by that task at all.

50D, 40 mm
Canon EF 40 mm f/2.8 STM - Distortion
1Ds MkIII, 40 mm
Canon EF 40 mm f/2.8 STM - Distortion