From the course: Photoshop CS5 One-on-One: Advanced

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How sharpening works

How sharpening works - Photoshop Tutorial

From the course: Photoshop CS5 One-on-One: Advanced

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How sharpening works

In this exercise I will introduce you to how sharpening works inside of Photoshop. I also want you to have a sense of what sharpening can and can't do. Despite the fact that sharpening is the foremost filtering effect inside of Photoshop so much so by the way that if you go to the Filter menu and choose Sharpen, you will see a total of five commands available in this submenu and that's not quite everything. There are a couple of other sharpening features that we will see as well. So Photoshop is throwing a lot of commands at the task of sharpening and Photoshop is an exceedingly powerful program, but the one thing you have to remember about Photoshop is that it cannot generate detail where no detail exists. So, for example, just as when you re- sample an image that is you increase the number of pixels or decrease the number of pixels, you are not going to suddenly add clarity. Those new pixels if you up sample the image are merely transitional pixels. They are not making up new detail…

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