Teaches the new features for sharpening in CS4, focusing on the OpenGL support.
(theme music) - Hello, and welcome to Photoshop CS-4, Sharpening Images, New Features. For those who don't know, sharpening is the art of increasing and sometimes even reducing edge contrast to create the appearance of an image that is more detailed, better defined, and ultimately better looking than it was before. Sharpening relies on a handful of filters, namely on sharp mask, smart sharpen, high pass and reduce noise, combined with smart objects, edge masks, camera raw and more.
Now, it may seem odd that I'm teaching a new feature series, given that the act of sharpening images in Photoshop has not changed at all from Photoshop CS-3, for which I have an entire sharpening images series, to CS-4. What has changed is Photoshop's ability to preview the sharpness of an image on screen. In Photoshop CS-3, zooming an image to the size at which it will actually print produces jagged transitions. The image appears significantly sharper then it will print, thus what you see is not what you get.
Thanks to Photoshop CS-4 support for Open GL an industry standard rendering technology built into most video cards, this problem is largely resolved. Now, what you see is much closer to what you get. Okay, so those are the broad strokes. If you're interested in sharpening an image in Photoshop CS-4 and you are because every image requires sharpening, then watch these videos. Then, be sure to watch the final video in which I tell you where to go to learn everything you need to know about sharpening images in Photoshop.