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Specify a feathering setting in the options bar. Turn anti-aliasing on or off for the Elliptical Marquee tool. See Soften the edges of selections.
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Fixed Ratio
Sets a height-to-width ratio. Enter values (decimal values are valid) for the aspect ratio. For example, to draw a marquee twice as wide as it is high, enter 2 for the width and 1 for the height.
Fixed Size
Specifies set values for the marquee’s height and width. Enter pixel values in whole numbers.
Note:
In addition to pixels (px) you can also use specific units such as inches (in) or centimeters (cm) in height and width values.
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- With the Rectangular Marquee tool or the Elliptical Marquee tool, drag over the area you want to select.
- Hold down Shift as you drag to constrain the marquee to a square or circle (release the mouse button before you release Shift to keep the selection shape constrained).
- To drag a marquee from its center, hold down Alt (Windows) or Option (Mac OS) after you begin dragging.
Dragging a marquee from the corner of an image (left), and from the center of an image (right) by pressing Alt/Option as you drag
- With the Single Row or Single Column Marquee tool, click near the area you want to select, and then drag the marquee to the exact location. If no marquee is visible, increase the magnification of your image view.
Note:
To reposition a rectangular or elliptical marquee, first drag to create the selection border, keeping the mouse button depressed. Then hold down the spacebar and continue to drag. Release the spacebar, but keep the mouse button depressed, if you need to continue adjusting the selection border.
Makes a rectangular selection (or a square, when used with the Shift key).
Makes an elliptical selection (or a circle, when used with the Shift key).
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