Panasonic G X VARIO 12-35 mm f/2.8 ASPH. P.O.I.S
5. Chromatic and spherical aberration
Chromatic aberration
The tested lens has almost no problems with the longitudinal chromatic aberration. It can be clearly noticed in photos below.
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Also the lateral chromatic aberration is nothing we should worry about. At longer focal lengths it is imperceptible, only at 12 mm it becomes medium but after stopping down it returns near low level.
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Spherical aberration
The lens didn’t have any ‘focus shift’ effect which suggests that spherical aberration cannot be high. Still it is not corrected in a perfect way which you can notice glancing at the photos below. They show a defocused light circle in front of and behind the focus. The light spread and intensity differs greatly – where in one case you have a local maximum, in the other you get a minimum.
