Carl Zeiss Milvus 85 mm f/1.4
5. Chromatic and spherical aberration
Chromatic aberration
Photos presented below show it clearly that the longitudinal chromatic aberration of the Milvus 1.4/85 is negligible already at the maximum relative aperture. It is a very similar performance to that of the much more expensive Otus.
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The graph showing the lateral chromatic aberration looks very nice as well – it’s enough you glance at a picture below to notice it.
No matter what detector and what aperture value you employ, that aberration remains practically constant, keeping a very low level of 0.01–0.02%. Within the margin of error the more expensive Otus performed practically the same so both these lenses deserve to be praised a lot in this category.
| Canon 5D III, f/1.4 | Canon 5D III, f/5.6 |
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Spherical aberration
First photos of this chapter don’t show any ‘focus shift’ effect so the level of spherical aberration cannot be very high. The appearance of defocused light circles seems to confirm that. If you add good image quality at the maximum relative aperture, without the characteristic contrast decrease, you might say the spherical aberration of the Milvus is corrected properly well.
| Canon 5D III, f/1.4, in front of | Canon 5D III, f/1.4, behind |
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