Several of the PFRE photographer of the month contest entries for August had some very noticeable color fringing (also called chromatic aberration) so I thought it would be useful to do a post on the subject.
Chromatic aberration comes from lens imperfections and is frequently present on wide angle lenses that don't have the newer coating, so depending on what lenses you have you may have never seen it or it many be in many of your photos and you just expect it because it's always there. I know about the subject mostly because I have a Sigma 8mm Fisheye, that I've used for 360s, that has serious chromatic aberration.
There's a classic description of the subject by Tom Hogarty, leader of the Adobe Lightroom Team. This piece by Tom is over a year old, but I don't believe much has been changed since then in Lightroom/ACR regarding chromatic aberration.
If you've got a lens that has chromatic aberration getting rid of the resulting color fringing is usually a simple matter of just turning on the "Remove Chromatic Aberration" check box in the Lens Correction panel of Lightroom. The tutorial above by Gregory Cazillo shows some additional fine points of removing CA.
It's possible to use the Set Default Settings... command in the Lightroom Develop command to set the Remove Chromatic Aberration checkbox as the default or as several commentators on a recent post pointed out, create a preset that turns on the CA check box and does a series of other basic adjustments you do for all the images in a shoot.