Levels can provide powerful color correction tools. Learn how to interpret the histogram, add a levels adjustment layer to balance an image's color, and toggle it off and on to see the result of your changes.

This movie shows how you can isolate changes to a per channel adjustment. This can be applied to masked areas and makes it easier to fix color cast issues limited to specific places.

Russell Brown shows you how to create texture and color layers that you add to your Photoshop Touch images for an aged or vintage look.