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Understanding the Lasso Tools
The basic Lasso tool works like a pencil, following the
PHOTOSHOP FOUNDATIONS The Polygonal Lasso tool creates selections with Lasso tool cursor
path where you drag the mouse.

straight lines, anchoring a line each time you click the
mouse. To close a selection area, you must click the first
Drag any shape
point in the selection.
to make a selection.
The Magnetic Lasso tool snaps to high-contrast
edges; you can use the Options bar to control the way
Photoshop detects edges of an image.
• Width is the distance away from the edge the
tool cursor
cursor can be and still detect edges; if you set this
higher, you can move the cursor farther from edges. Polygonal Lasso
Click each spot
• Contrast is how different the foreground to anchor the
can be from the background and still be detected; selection line.
if there is a sharp distinction between the
foreground and background, you can
set this value higher.
• Frequency is the number of points Magnetic Lasso
tool cursor
that will be created to make the
selection; setting this number higher Drag near the
creates finer selections, while setting it edges of the object
lower creates smoother edges. and the selection
snaps to the edges.
It isn’t uncommon for a mouse to
unexpectedly jump when you don’t want it
to — which can be particularly troublesome if you’re drawing a selection with the Polygonal or Magnetic Lasso tools. If you
aren’t happy with your Polygonal or Magnetic Lasso selection, press Escape to clear the selection and then try again.

7. With the marching ants active, choose Select>Modify>Feather.
Photoshop offers a number of options for modifying an
exiting selection marquee. In the Select>Modify menu:

Border creates a selection of a defined number of pixels
around the edge of the active marquee.

Smooth helps to clean up stray pixels at the edge of a
selection. Within a defined radius from the selection edge,
pixels with less than half of the surrounding pixels are
excluded from the selection.
Expand and Contract enlarge and shrink a selection
(respectively) by a defined number of pixels.

Feather creates a blended edge to the active selection area.
Select>Grow expands the selection to include all adjacent pixels that fall within the
tolerance defined for the Magic Wand tool.
Select>Similar expands the selection to include all pixels throughout the image that fall
within the tolerance range, even if they are not adjacent to the active selection.
Select>Transform Selection shows bounding box handles around the selection
marquee, which you can use to transform the selection just as you would transform layer
content.

64 Project 1: Composite Movie Ad