Canon EF 24 mm f/2.8 IS USM
5. Chromatic and spherical aberration
Chromatic aberration
It would be difficult to expect some serious problems with longitudinal chromatic aberration in a case of a f/2.8 24 mm lens. The photos below show very clearly that there are no such problems indeed and the lens in this category fares very well.
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The lateral chromatic aberration results are similar. Actually in most cases the level of that aberration is low and only on significant stopping down and using a smaller detector you see it approach the borderline between low and medium level. It is not an issue that should bother you, though. Once again our assessment of the tested lens is positive.
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Spherical aberration
Spherical aberration also seems to be corrected in a good way. First of all you don’t see and focus shift. Additionally off-focus images of light points you get in front of and behind the focus are very similar, without any local extremes.
