Removing fringing (or is it CA? What's the difference again?)

I love LR3 and use it all the time but i do find DPP does a better correction most of the time. For this sort of thing anyway.

Oh, and to the OP. The 85 f/1.8 is well known for this sort of thing but once stepped down a bit its not too bad.

Sorry to bump this thread after a few months, but it applies.

I have been unable to correct the purple fringing using DPP. Here's an extreme example of what I'm fighting. It sounds like my shooting wide-open may be a big chunk of my problem, but I don't see DPP helping AT ALL. None of the lens correction sliders do much of anything.

(to see bigger, change "XL" to "O" for "O"riginal. Not actually full res, but bigger)

Well, as the earlier posts in the thread pointed out, you may need to try different approaches, which requires some image editing software and some retouching. Go back through the posts and try to take in the options. If you don't have a decent image editor, look at something like Photoshop Elements or the Gimp that gives you the ability to do selective color corrections (or Lightroom/Aperture Raw processors, which have local adjustment brushes).

You've got a really bad case due to the high contrast against that blown out white jersey. I took your "O" photo into Photoshop and ran PTLens on it, but couldn't make a dent. But I sometimes will blow an image up to pixelated levels and use the clone stamp tool or healing brush (Replace mode) to paint out as much CA and fringing as possible.

You can also desaturate the specific magenta and blue fringing. I experimented with that method on your photo and it was quite effective. Make sure you work in adjustment layers.

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Thanks a lot for the quick responses.

I was hoping I could get some love from DPP, as the lens tab in the tool seems pretty useless for my issues. I'm still in the budget doghouse from buying that 70-200 I do have PSe though -- I just am hesitant to use it when I'm processing so many images. Another step to the workflow...

It seems like I have less of a problem when I underexpose slightly and bring it up in DPP. Would that make sense, or am I imagining it?

Based on what I read in this thread, the shallow DoF really seems to be a major factor b/c of the out of focus kid in the foreground (he's the most purple).

Most of my images aren't bad enough to see it at normal viewing sizes, but every so often, one like this crops up.

Well, doing anything selectively in DPP just isn't there. Even though it has the RGB channels it really wouldn't work so well trying to use that to desaturate purple I'd think. Sometimes in Lightroom I've been able to get away with that because LR has dedicated color channels including purple that you can use to play with saturation. But still you would get better results by getting the pic into Elements and using an adjustment layer with a mask and just painting the purple desaturation over the specific parts. Or, some people create a color selection and then use the desaturation of the selected color.

Tony's right... DPP is an excellent raw convertor, but it is still limited in controls compared to ACR or LR. But the CA and fringing is a pixel level issue which only a good image editor can address.

The CA and fringing is a common result of shooting a dark subject against an extremely bright background. The large aperture didn't cause it.