Glad I could help Jim, there is a lot on the web about CA, and the different types, as it's fairly common. This characteristic is sometimes measured, or at least discussed, as part of a lens review. I think you're a Nikon shooter, so here are examples of 2 lenses - one a low cost 18-55mm and the the Nikkor 14-24mm. Completely different lenses in all respects, but interesting at least to see the comparison, the CA measurements are on page 2.
http://www.photozone.de/nikon--nikkor-a ... est-reportYour image processing software may have an option to correct some or all of it, Photoshop has this built in both in the RAW converter and the main program.