Teach Yourself Adobe Photoshop CS2.pdf - Online Public Access ...

This document was created by an unregistered ChmMagic, please go to http://www.bisenter.com to register it. ThanksWhen you click in a layer with the Magic Eraser tool, the tool automatically erases all similarly colored pixels to transparency. You canchoose to erase only contiguous pixels or all similar pixels on the current layer.Try it YourselfUse the Magic Eraser ToolNow, you can try the Magic Eraser. Pick any image that has an area of fairly even color, such as the sky.1. Select the Magic Eraser. The Options bar will change to show its options.2. Enter a Tolerance value. The tolerance defines the range of colors that can be erased. A low tolerance erasespixels within a range of color values very similar to the pixel you click. A high tolerance erases pixels within abroader range.3. Specify the Opacity to define how much is erased. An opacity of 100% erases pixels to complete transparency.Lower opacity erases pixels to partial transparency.4. Set up the remaining options as needed:Choose Sample All Layers if you want to sample the erased color using combined data from allvisible layers.Choose Anti-alias to smooth the edges of the area you erased.Choose Contiguous to erase only pixels of the same color contiguous to the one you clicked, orleave it unselected to erase all similar pixels in the image.5. Click in the part of the layer you want to erase. All similar pixels within the specified tolerance range will beerased to transparency.In Figure 7.16, you can see the results of using the Magic Eraser tool. First, I isolated the sky by lassoing it. I did this because it wasotherwise too close to the color of the pond. I've clicked three times to remove this much of the background. You might have to makeseveral selections to erase all of the area you want to remove. You might also need to use the regular Eraser to clean up pixels that theMagic Eraser misses. But this tool is by far the fastest way to remove the background from an image. You'll use it a lot in Hour 20,"Compositing," when you work on composite images.Figure 7.16. The Magic Eraser removes all pixels that are similar to the one you click.