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Graphics.com has a photoshop tips tutorial on Automate Color Adjustments in Photoshop:
'The Auto adjustment commands aren’t just for beginners. Even imaging pros use them as initial steps for color correction. Which Auto option you choose—Color, Levels, or Contrast—depends on the image type, the problem you want to resolve, and your artistic intent. Each Auto command in the Image > Adjustments submenu performs the same function: It darkens the darkest area (shadows) and brightens the lightest area (highlights). The differences among the commands are how they adjust each color channel and whether or not they adjust an image’s midtones.To duplicate the effects shown in this tutorial, open laughingman.jpg (available in the downloadable photoshopfix4.zip archive). After opening it, access the Info palette (F8), position the cursor over the wall behind the man, and read the values in the palette. Normally, neutral gray areas should have nearly identical values for Red, Green, and Blue. Here, the Green value is much lower than the others, which is why the wall and the man’s shirt have a magenta color cast.'
Posted by Darren in our Tips category on January 22, 2005
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