How to correct CA?

I have the Canon 17-85 IS...it is a very versatile and pretty sharp lens, but it has an huge chromatic aberration. I plan to upgrate to the 24-105 L IS, but this lens has a little of CA as well, even if it is much less than the CA of the 17-85.

How can I correct chromatic aberration? I have tried the CA correction of PS CS2 and I'm not satisfied by the results - it soften the image and the improvement in CA reduction is minimal. :-/

Do you know some better option?

Thanks in advance for your help, always very appreciated!

In my opinion raw converters do a better job correcting CA and fringing than PS. One exception is the PTLens plugin - it actually has profiles for a long list of lenses and cameras and can usually correct CA and distortion with little to no manual adjustment.

Guy

I find that the ACR converter does the best job at this once you fiddle with the settings a bit. Havne't had much luck with the PT Lens CA because once you remove it from one area, it transfers to elsewhere in the image or just makes the whole thing defocused. It does a great job at the other distortions though.

Thanks Guy and Rich,
your suggestion has been invaluable!

I have ACR, but I didn't even thought to try it to correct CA, since I try to use PS for every adjustment (it has finer controls)...after reading your suggestion I did some test with a 17-85 image and...WOW! It works perfectly, it is *way* better than the CA correction in the "Lens Correction" window of PS.
I don't understad why there is so much difference between the two controls of ACR and PS but I am really happy of the results of this "re-discovered" tool