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Lens review

Panasonic Leica DG Summilux 12 mm f/1.4 ASPH

11 July 2017
Arkadiusz Olech

5. Chromatic and spherical aberration

Chromatic aberration

The tested lens experiences noticeable problems with longitudinal chromatic aberration. That aberration is more distinct in the case of the Panasonic GX80 than in the case of the Olympus E-M5 Mark II due to differences in filters transmittance but you can notice it in both cases and it remains quite visible.

Panasonic Leica DG Summilux 12 mm f/1.4 ASPH - Chromatic and spherical aberration

Panasonic Leica DG Summilux 12 mm f/1.4 ASPH - Chromatic and spherical aberration

The lateral chromatic aberration is not bothersome at all for a change and the graph below shows it pretty well.
Panasonic Leica DG Summilux 12 mm f/1.4 ASPH - Chromatic and spherical aberration


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Its highest level can be observed at the maximum relative aperture where we got almost 0.08%; still for most of other apertures the results were closer to 0.06% so you deal here with values we consider to be low.

Olympus E-PL1, RAW, f/1.4 Olympus E-PL1, RAW, f/5.6
Panasonic Leica DG Summilux 12 mm f/1.4 ASPH - Chromatic and spherical aberration Panasonic Leica DG Summilux 12 mm f/1.4 ASPH - Chromatic and spherical aberration


Spherical aberration

First photos from this chapter don’t feature any ‘focus shift’ effects so the tested lens cannot have big spherical aberration problems. Still the circles of light, shown below, prove that aberration is not corrected in a perfect way – they are not identical, the one we got before the focus has darker centre and the one after the focus is lighter inside.

Olympus E-M5 II, f/1.4, in front of Olympus E-M5 II, f/1.4, behind
Panasonic Leica DG Summilux 12 mm f/1.4 ASPH - Chromatic and spherical aberration Panasonic Leica DG Summilux 12 mm f/1.4 ASPH - Chromatic and spherical aberration