Panasonic Leica DG Macro-Elmarit 45 mm f/2.8 ASPH. M.O.I.S.
8. Vignetting
At the maximum relative aperture the brightness loss in the frame corners amounts to 39%
(-1.43 EV), so it is distinct and easy to notice. On stopping down the aperture to f/4.0 the vignetting decreases to 24% and by f/5.6 it reaches 18%. This aberration becomes completely imperceptible by f/8.0 and by f/11 where it is 12% and 9% respectively.
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