And clean those black and white pixels

484 Selective Erasing with the Eraser Tools

Use the Brush Preset picker drop-down palette to select from a variety of brush sizes and styles. Block has only one size, a square of 16 x 16 pixels. But because the block size remains constant, if you zoom way in, you can perform some detailed erasing.

� Opacity: Specify a percentage of transparency for the erasure. Opacity settings less than 100 percent only partially erase the pixels. The lower the Opacity setting, the less it erases. This option isn’t available for the Block mode.

The Magic Eraser tool

	The Magic Eraser tool works like a combination Eraser and Magic Wand tool. It both selects and erases similarly colored pixels:

� When you click a layer with locked transparency: The Magic Eraser tool erases the pixels and replaces the area with the background color.

The Tolerance value defines the range of colors that Photoshop erases, just like it does with the Magic Wand tool.
		Book VI Chapter 2
� Anti-alias: Creates a slightly soft

� Sample All Layers: Samples colors using data from all visible layers, but erases pixels on the active layer only.

� Opacity: Works like it does for the regular Eraser tool.

	If you’re not careful, the Background Eraser tool erases the foreground and anything else in its path. Like the Magic Eraser tool, the Background Eraser tool erases to trans-parency on a layer. If you drag an image with only a background, Photoshop converts the background into a layer.

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