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Hour 17. Using the Improvement Filters > Using the Blur Filters

Using the Blur Filters

The Blur filters logically ought to be the direct opposite of the Sharpen filters. Some are. Blur and Blur More have the same global, one amount fits all, method of application. Choose either one of these two filters from the Filter, Blur menu, and the filter is applied automatically, without options. I actually tried a sequence of Blur, Sharpen, Blur More, and Sharpen More on a picture, and aside from some obvious quality loss, I got back to about where I started. However, I don’t recommend this as a technique. The image loses some detail at each step.

Blurring, generally, is not something you want to do to the entire image. If you are applying a combination of filters for a special effect, Blur could certainly be one of them, but most of the time we want our pictures sharp. Blurring part of the image, though, is a very useful technique. When you blur an object against a sharp background, you create the illusion that it’s in motion. When you blur a background, you create the illusion of depth of field, where the subject is in focus, but the background is so far away that you can’t see all the details. Blur and Blur More are best applied to selections.


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