I was reading the NAPP magazine (Photoshop User) and came across a color correction method by using a new PS CS filter.

It is essentially the same as the old method of finding what should be a neutral color, painting a new layer with that color, invert, change blend mode to color, and adjusting opacity.

But, by using the new average blur filter, you don't have to find a supposed neutral color.

Method follows:

Dup background (CTRL-J)
Filter > Blur > Average (this will change your layer to a solid color).
Image > Adjustment > Invert (CTRL-I)
Change blend mode to color and adjust opacity

It worked very well on the image I worked with that had a color cast to it, but it may not work on all images. Something to try, though.

BTW, On my test image, I had to up the saturation a bit after the process.

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Gary Willson
http://willsononline.com