Using GPU processing, Photoshop CS4 does things like never before. Colin Smith shows you the new viewing options available in Photoshop CS4. Smoothly zoom, pan and move around your image with complete freedom. Discover how to use the Flick-Pan and pixel grid tools in Photoshop CS4 as well. If you think you know all there is to know about zoom and pan in Photoshop CS4, think again and watch this tutorial.