LensTip.com

Lens review

Voigtlander Apo Lanthar 35 mm f/2 Aspherical

11 June 2021
Maciej Latałło

5. Chromatic and spherical aberration

Chromatic aberration

The 'APO' letters in the name of the lens promise you a lot so in this category our expectations were really high. Still, we weren't disappointed.

When it comes to longitudinal chromatic aberration we have no reservations whatsoever. Even at the maximum relative aperture it is really difficult to notice any colouring in out-of-focus areas. It means the tested lens corrects that aberration very well.

Voigtlander Apo Lanthar 35 mm f/2 Aspherical  - Chromatic and spherical aberration




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Now let's check the Voigtlander's performance concerning lateral chromatic aberration – an appropriate graph you can find below

Voigtlander Apo Lanthar 35 mm f/2 Aspherical  - Chromatic and spherical aberration


As you see the aberration increases with stopping down but, fortunately, it never reaches levels that might be worrisome. In fact, quite the opposite is true. On the edge of full frame all results are situated below 0.04%; it means noticing lateral aberration in real life photos is practically impossible. A bit higher level can be seen on the edge of the APS-C sensor but even there the maximum results never exceed 0.06%, a value that still can be called low.

A7R III, RAW, FF, f/2.0 A7R III, RAW, FF, f/11.0
Voigtlander Apo Lanthar 35 mm f/2 Aspherical  - Chromatic and spherical aberration Voigtlander Apo Lanthar 35 mm f/2 Aspherical  - Chromatic and spherical aberration

Spherical aberration

First photos of this chapter don’t feature any ‘focus shift’ effect. Circles of light generated before and behind the focal point look a bit different because of the layout of concentric circles in their middles, but these differences aren't especially pronounced. You can safely assume that the Voigtlander Apo Lanthar 2/35 doesn't have any serious problems with correcting spherical aberration.

A7R III, f/2.0, before A7R III, f/2.0, after
Voigtlander Apo Lanthar 35 mm f/2 Aspherical  - Chromatic and spherical aberration Voigtlander Apo Lanthar 35 mm f/2 Aspherical  - Chromatic and spherical aberration