Selecting Rectangular and Elliptical Areas

Selecting your whole picture is all very well and good, but many times your reason for making a selection is precisely because you don't want the whole image involved in what you plan to do. How do you select just part of the picture?

Well, the easiest way is to use the Marquee tools. You already made the acquaintance of the Rectangular Marquee tool back in Chapter 3, in the section on cropping. If you want to select a block of your image or a circle or an oval from it, the Marquee tools are the way to go. As the winners of "Most frequently used Selection tools," they get top spot in the Selection area of the Editor's Toolbox. You can modify how they work, like telling them to create a square instead of a rectangle, as explained in Figure 5-2.

The popular name for these dotted lines is "marching ants" because of the way they march around your selections to show you where the edges lie. When you see the ants, your selection is active, meaning what you do next happens only to the selected area.

Figure 5-1. The popular name for these dotted lines is "marching ants" because of the way they march around your selections to show you where the edges lie. When you see the ants, your selection is active, meaning what you do next happens only to the selected area.

To use the Marquee tools to make a selection:

  1. Press M or click the Marquee tool's icon in the Toolbox to activate it.

    The Marquee tool is the little dotted square right below the Eyedropper icon.

    The Marquee tools usually make oval or rectangular selections. To make a perfectly circular or square selection, hold down the Shift key while you drag. To draw your selection from the center, hold down Alt (Option). It's easier to do it that way when you know the central point you want to include but aren't sure how much of the surrounding area you want.

    Figure 5-2. The Marquee tools usually make ...

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