Dan Marguliss Professional Photoshop: The Classic Guide to Color Correction is arguably the most influential book in Photoshop history. It is commonly referred to as "the bible of electronic prepress" and, since its first edition in 1994, has introduced most of the advanced correction techniques that are assumed knowledge for today's professionals. With this edition you'll learn to grasp concepts regarding color, curves, and channels and will be rewarded with a in depth understanding of the most advanced Photoshop techniques.