Selective Color Change
A direct approach to the problem of mixed light sources is to select the color effect of one and then shift it or filter it toward a more pleasing or neutral result.
There are a number of ways of targeting specific colors in an image, and these vary according to the image-editing software, and whether you’re working on a Raw file, converted JPEG, or TIFF. If you’re working on converted files, beginning with Photoshop, the two most convenient are Replace Color (see box, page 57) and Hue/Saturation, both found under Image > Adjustments. Hue/Saturation has been around for a long time, and Replace Color is actually a more focused version of the procedure, with an added preview of the areas selected. In either case, the technique ...
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