Voigtlander Apo-Lanthar 65 mm f/2 Aspherical 1:2 Macro
5. Chromatic and spherical aberration
Chromatic aberration
The Voigtlander fully deserves APO letters in its name. Even at the maximum relative aperture it would be difficult to notice any traces of longitudinal chromatic aberration. |
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Once again the tested lens can only be praised. The aberration level is the highest at the maximum relative aperture but even then it doesn’t exceed 0.04%, remaining very low. On stopping down the aperture the results are kept around a level of just a tad less than 0.02%. The degree of correction is excellent indeed.
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| A7R II, RAW, f/2.0 | A7R II, RAW, f/8.0 |
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Spherical aberration
First photos of this chapter don’t feature any ‘focus shift’ effect. Additionally, when you consult defocused circles of light created in front of and behind the focus, you won’t notice anything disturbing either. These facts allow us to say that the tested lens doesn’t have any noticeable problems with spherical aberration.
| A7R II, f/2.0, in front of | A7R II, f/2.0, behind |
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