LensTip.com

Lens review

Samyang 10 mm f/2.8 ED AS NCS CS

16 June 2014
Arkadiusz Olech

8. Vignetting

Let’s check the vignetting level on images we got using the Canon 50D.

Samyang 10 mm f/2.8 ED AS NCS CS - Vignetting


It is huge and sticks out immediately; our measurements confirm that as well. At the maximum relative aperture the brightness loss in the frame corners amounts to as much as 49% (-1.95 EV). Fortunately it decreases sharply on stopping down the aperture to f/4.0 where it is just 26% (-0.87 EV). By f/5.6 that aberration becomes almost imperceptible reaching 12% (-0.38 EV). Further stopping down doesn’t have any measurable influence on the vignetting level.


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Unfortunately in a duel with some of the zooms the Samyang loses again. The Tokina at a combination of 11 mm and f/2.8 showed 33% of vignetting so its result was much better. However, as a consolation of a kind, we can also quote here the result of the Sigma which at 10 mm and by f/3.5 lost as much as 53% of light in the frame corners.

Samyang 10 mm f/2.8 ED AS NCS CS - Vignetting