Venus Optics LAOWA 7.5 mm f/2 MFT review - Chromatic and spherical aberration

Have you rated your lenses yet?

Venus Optics LAOWA 7.5 mm f/2 MFT

9 October 2017

Arkadiusz Olech

5. Chromatic and spherical aberration

Chromatic aberration

The longitudinal chromatic aberration is corrected by the Laowa very well. It’s difficult to notice any distinct colouring of images even at the maximum relative aperture and in out-of-focus areas positioned further on.

Venus Optics LAOWA 7.5 mm f/2 MFT - Chromatic and spherical aberration

Now let’s check lateral chromatic aberration – below we show a graph with its performance depending on aperture values.

Please Support Us

If you enjoy our reviews and articles, and you want us to continue our work please, support our website by donating through PayPal. The funds are going to be used for paying our editorial team, renting servers, and equipping our testing studio; only that way we will be able to continue providing you interesting content for free.

- - - - - - - - - - - - - - - - - advertisement - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

As you see that aberration correlates weakly with the relative aperture, ranging from 0.05% to 0.07% all the time. Such results can be only described as low so the lateral aberration correction of the Laowa seems to be beyond reproach.

Olympus E-M5 II, RAW, f/2.0	Olympus E-M5 II, RAW, f/8.0

Spherical aberration

The lens didn’t have any focus shift effect so we don’t think it has big problems with spherical aberration. We couldn’t perform another test concerning that aberration, consisting of comparing circles of light created in front of and behind the focus because of significant depth of field provided by the lens. It was simply impossible to get circles of the same size on both sides of the focal point. Still very high resolution values the Laowa gets in the frame centre at the maximum relative aperture is another argument showing that the spherical aberration is corrected in the right way.