As a relatively in-experienced Photoshop user who predominantly uses the Levels command to tweak photographs, I’ve tended to ignore the Curves command, which is supposed to be the better tool. However, the well-written, in-depth “Introduction to the Curves Command” article at GurusNetwork (found via digicamera.net) may well change my mind.

“I’m going to start this essay with a provocative statement: Anyone who is, or wants to be doing image editing at a professional level needs to be as comfortable with Curves as they are with breathing. Is that bold enough? Do I have your attention now? If I were forced to give up all but one image adjustment tool, the one I would keep would be Curves. Think of Curves as your one-stop-shopping source for improving images the way the pros do.”

Website: GurusNetwork - Curves Article