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Lens review

Samsung NX 30 mm f/2.0

15 February 2010
Szymon Starczewski

8. Vignetting

At the very beginning of this subsection once again the NX10 users should be warned about the differences between RAW and JPEG files. The latter show a lower brightness loss in the frame corners that RAW files because of additional corrections and cropping. However, as our task is to test optics, not to check what can be done with the image, we based the whole analysis on the RAW files.

Samsung NX 30 mm f/2.0 - Vignetting

At the maximum relative aperture the Samsung’s 2/30 vignetting reaches 35% (-1.26 EV). It’s quite a lot but you must notice that in the case of lenses with the angle of view of 50 degrees it would be difficult to avoid this problem. We wouldn’t complain a lot here if the second issue didn’t arise. Usually with such an equipment type the vignetting decreases swiftly on stopping down. It is not the case of the Samsung, though. By f/2.8 the light fall-off in the frame corners decreases to 28% and by f/4.0 – to 21%. Its very slight influence is noticed even by f/5.6 and f/8.0 where the vignetting amounts to 16% and 14 % accordingly.

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Samsung NX 30 mm f/2.0 - Vignetting