Adobe Photoshop CC 2014 v.14.xx - Manual (Page 350)

Selecting with the lasso tools
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Select with the Lasso tool
Select with the Polygonal Lasso tool
Select with the Magnetic Lasso tool
Select with the Lasso tool
The Lasso tool is useful for drawing freeform segments of a selection border.
1. Select the Lasso tool , and set feathering and anti-aliasing in the options bar. (See Soften the edges of selections .)
2. To add to, subtract from, or intersect with an existing selection, click the corresponding button in the options bar.
Selection options
A. New B. Add To C. Subtract From D. Intersect With
3. Do either of the following:
Drag to draw a freehand selection border.
To switch between freehand and straight-edged segments, press Alt (Windows) or Option (Mac OS), and click where segments should
begin and end. (To erase recently drawn straight segments, hold down the Delete key.)
4. To close the selection border, release the mouse without holding down Alt or Option.
5. (Optional) Click Refine Edge to further adjust the selection boundary. See Refine selection edges .
Select with the Polygonal Lasso tool
The Polygonal Lasso tool is useful for drawing straight-edged segments of a selection border.
1. Select the Polygonal Lasso tool , and select options.
2. Specify one of the selection options in the options bar.
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