What are some tips & tricks for matching color values of different lighting types?

[jjhunter]

I've seen some gorgeous photo manips where the artist adjusts for the effects of different types of lighting in different pieces of the source material. What are some good ways to do that? In the collage I created under the cut, I used 'Adjust Hue / Lightness / Saturation' under 'Colors' to, e.g., lower the saturation of both cyan and 'master' in the 'TARDIS console' layer. I was essentially matching it on the fly by eye, but I'm curious whether there's some use of, say, the eyedropper tool en masse to get a sense of the general color balance patterns

Other techniques I used include reduced opacity erasing to an alpha channel (dollhouse and sleeping man layers); duplication, rotation, and movement of the Sagrada Familia layer (Gaudí cathedral); and merge down (Escher layer to dollhouse layer).

( Living Under Imaginary Roofs )

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