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Filter essentials

Most Photoshop filters provide a preview dialog with slider settings that you can adjust, while some of the more sophisticated plug-ins (such as the Lens Correction filter) are like applications operating within Photoshop. These have a modal dialog interface, which means that whenever the Filter dialog is open Photoshop is pushed into the background, which can usefully free up already-assigned keyboard shortcuts. With so many effects filters to choose from in Photoshop, there are plenty enough to experiment with. The danger is that you can all too easily get lost endlessly searching through all the different filter settings. There is not enough room to describe every Photoshop filter here, but we shall look at a few of the ways filters can enhance an image, highlighting some of the more useful ones plus a few personal favorites.

RGB only filters

You will notice that most of the effects filters work in RGB mode only. This is because they can have such a dramatic effect on the pixel values, and would easily send colors way out of the CMYK gamut. To unleash the full creative power of Photoshop plug-ins, you really do need to edit in RGB mode.



  

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