How to Subtract from a Selection in Photoshop CS6

Just like you can add to a selection marquee in Photoshop CS6, you can also subtract from, or take a chunk out of, a selection. Here’s how to subtract from a current selection using the following tools:

  • The regular Lasso tool or the Rectangular and Elliptical Marquee tools: Hold down the Alt (Option on the Mac) key and drag around the pixels you want to subtract.

  • The Magic Wand and the Quick Selection tools: Hold down the Alt (Option on the Mac) key and click the area you want to remove.

  • The Polygonal Lasso tool: To subtract a straight-sided area, hold down the Alt (Option on the Mac) key and click around the area.

  • The Single Column and the Single Row Marquee tools: You can hold down the Alt (Option on the Mac) key and click. The Single Column and the Single Row Marquee tools come in handy when you want to get rid of just the edge of a selection.

Select the outside of the frame by using the Polygonal Lasso tool. Don’t use the obvious tool of choice — the Rectangular Marquee tool — because the frame isn’t completely straight. To deselect the inside of the frame from the selection, hold down the Alt (Option on the Mac) key and click each corner of the inside of the frame when using the Polygonal Lasso tool.

[Credit: ©iStockphoto.com/leezsnow Image #4643106]
Credit: ©iStockphoto.com/leezsnow Image #4643106
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