Was that a problem of the processing or the optical effect known as "chromatic aberration"? If you take a shot of a subject against a bright background, you often get side-effects including purple fringes - the problem varies depending on light, lens and focal length.
If it was the optics, shooting RAW images wouldn't have helped in that instance. To be honest, for my purposes, I am happy shooting in JPEG mode. I'm pleased with the results I get and haven't been able to improve on them when I have experimented with the RAW mode on my D40.
Wulf
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Wulf Forrester-Barker << Sites: blog / flickr >>
Gear: Nikon D40, Nikon AFS 18-55mm f/3.5 - 5.6G, Nikon Series E 50mm f/1.8, Nikon AF 70-300mm f/4-5.6G, Vivitar 90mm f/2.5 macro, Raynox DCR-250, Lensbaby 2.0k, SB600
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