Chromatic Aberration

Lateral chromatic aberration is caused when the camera lens focuses different wavelengths of light at slightly different distances. This causes the red, blue and green planes to go out of alignment, causing multiple colour fringes and out of focus details. The problem often gets more pronounced with increasing distance from the centre of the image.

The Chromatic Aberration filter fixes chromatic aberration by warping the blue and red planes so they align with the green plane—which is usually the most in focus—and finds the best alignment.