If the picture was captured on film, deciding what caused the coloured fringing is easy: only chromatic aberration can be blamed. It’s more difficult if the shot was taken with a digital camera ...

Real lenses cause glow and flare, diffusion, an impressive catalogue of geometric distortions, vignetting and various kinds of blur with or without chromatic aberration, and that’s if they’re clean.

Chromatic aberration (CA), those colorful glowy outlines on hard edges of your high contrast images, can be a real downer when processing or sharing your photography. Luckily, these days removing ...