Chromatic aberration is due to refractive errors in optics and appear mostly at the edges of the picture and when to use a wide-angle lens. It can be seen easily in kontrasktrika transitions, see the picture below.











Normally to remove chromatic aberration in the RAW converter by entering the optics have been used and check the box for chromatic aberration.

If you have not done it, it can also be fixed to retrospectively, click here to see how.