PDF (adobe.com)

Select with the Lasso tool

The Lasso tool is useful for drawing freeform segments of a selection border.

  1. Select the Lasso tool , and select options.
  2. Drag to draw a freehand selection border.
  3. Specify one of the selection options in the options bar.
    Selection options

    A.
    New

    B.
    Add To

    C.
    Subtract From

    D.
    Intersect With

  4. (Optional) Set feathering and anti-aliasing in the options bar. See Soften the edges of selections.
  5. To draw a straight-edged selection border when no other pixels are selected, press Alt (Windows) or Option (Mac OS), and click where segments should begin and end. You can switch between drawing freehand and straight-edged segments.
  6. To erase recently drawn segments, hold down the Delete key until you’ve erased the fastening points for the desired segment.
  7. To close the selection border, release the mouse without holding down Alt (Windows) or Option (Mac OS).
  8. (Optional) Click Refine Edge to further adjust the selection boundary or view the selection against different backgrounds or as a mask. See Refine selection edges.