Olympus M.Zuiko Digital 8 mm f/1.8 ED PRO Fisheye
8. Vignetting
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The vignetting measurement in a case of a fisheye lens is very difficult; that’s why we cannot state here an exact value. The evaluation can still be done. In the case of the tested Olympus it seems that the brightness loss in the frame corners at the maximum relative aperture reaches about 45% (-1.8 EV). It’s a lot but also such a result is completely understandable, taking into account the offered parameters.
