Olympus M.Zuiko Digital 25 mm f/1.8
5. Chromatic and spherical aberration
Glancing at the crops, shown below, you can notice that defocused images are slightly coloured but the effect is not especially pronounced. It means you shouldn’t have any reservations when it comes to the longitudinal chromatic aberration correction.
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The lateral chromatic aberration also doesn’t seem to cause problems – its level, as shown on the graph below, amounts to about 0.06% which is a good result.
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Spherical aberration
The Olympus M.Zuiko Digital 25 mm f/1.8 doesn’t have any „focus shift” effect and its images of defocused light points don’t indicate there might be any noticeable problems with the correction of the spherical aberration.
