Adobe Photoshop CS2 CLASSROOM IN A BOOK [Electronic resources] نسخه متنی

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Adobe Photoshop CS2 CLASSROOM IN A BOOK [Electronic resources] - نسخه متنی

Anita Dennis

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About selecting and selection tools


Selecting and making changes to an area within an image in Photoshop is a two-step process. You first select the part of an image you want to change with one of the selection tools. Then, you can use another tool to make changes, such as moving the selected pixels to another locationLesson 10, "Vector Drawing Techniques."

A. Rectangular Marquee tool

B. Move tool

C. Lasso tool

D. Magic Wand tool

The best selection tool for a specific area often depends on the characteristics of that area, such as shape or color. There are three types of selections:

Geometric selections
You use the Rectangular Marquee tool () to select a rectangular area in an image. The Elliptical Marquee tool (), which is hidden behind the Rectangular Marquee tool, selects elliptical areas. Use the Single Row Marquee tool () and Single Column Marquee tool () to select either a 1-pixel-high row or a 1-pixel-wide column, respectively.

Freehand selections
You can drag the Lasso tool () around an area to trace a freehand selection. Using the Polygonal Lasso tool (), you can click to set anchor points in straight-line segments around an area. The Magnetic Lasso tool () works something like a combination of the other two lasso tools, and is best when there is good contrast between the area you want to select and its surroundings.

Color-based selections
The Magic Wand tool () selects parts of an image based on the similarity in color of adjacent pixels. It is useful for selecting odd-shaped areas that share a specific range of colors.


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