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Library: Creative Design

 

Channel your creativity: Take complete control of your Filters and Effects

Added on Monday 4th of May 2009 09:23 am EST

 
Application > Adobe Photoshop CS/CS2
Operating Systems > Macintosh, Microsoft Windows

Every digital image is made up of at least one channel that's used to store information about color properties in the image. An RGB image for example has three; Red, Green, and Blue. Photoshop enables you to view and edit each channel separately. But if you think the only reason for working with channels is simply to adjust the color of an image, think again. You can use a channel as a starting point, and together with the Effects and Layer Styles commands, gain great creative control over image editing as shown in Figure A. Now let's see how to do so.


Open an image and duplicate the layer
Each channel of an image is in fact a separate grayscale image. This means that you can adjust, edit, and manipulate each channel exactly as you would any other image. Let's open an RGB image for an example. To follow along, download the channels.jpg file from the URL given at the beginning of this article.
1. Launch Photoshop and open the channels.jpg file, as shown in Figure B. Since we'll be editing the channels, let's work on a duplicate of our original.

2. Select the Background layer and drag it to the Create New Layer button icon found at the bottom of the Layers palette. Name the new layer Effects. Now we're ready to work wit...