Panasonic Leica DG Summilux 15 mm f/1.7 ASPH review - Vignetting

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Panasonic Leica DG Summilux 15 mm f/1.7 ASPH

6 August 2014

Arkadiusz Olech

8. Vignetting

On the one hand you deal here with a small Micro 4/3 sensor, on the other hand the lens is quite fast aperture-wise and its dimensions are small. Those two last features seemed to be prevalent and, as a result, you can’t say the vignetting is corrected well.

Panasonic Leica DG Summilux 15 mm f/1.7 ASPH - Vignetting

At the maximum relative aperture the vignetting is as high as 53% (-2.18 EV) so very distinct. Huge problems are to be experienced by f/2.0 where the brightness loss in the corners amounts to 40% (-1.49 EV). A quite moderate level appears only by f/2.8 where the vignetting gets to 22% (-0.73 EV). By f/4.0 aperture and higher you deal with a level of 21% (-0.73 EV).

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The Olympus E-PL1 camera we used in our test didn’t correct the vignetting on JPEG files so RAW and JPEG results are pretty much similar, with differences between both never exceeding 3-4%.