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

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Selecting with the Magic Wand tool

The Magic Wand tool is one of the easiest ways to make a selection. You simply click a particular colored point in the image to select areas of that color. This method is most successful for selecting an area of closely similar colors that is surrounded by areas of different color. After you make the initial selection, you can add or subtract areas by using specific keyboard combinations with the Magic Wand tool.

The Tolerance option sets the sensitivity of the Magic Wand tool. This limits or extends the range of pixel similarity, so 32the default toleranceselects the color you click plus 32 lighter and 32 darker tones of that color. The ideal tolerance level depends on the color ranges and variations in the image.

Using the Magic Wand tool to select a colored area

The large number "5" in the 05Start.psd file (which should be open now) is a good candidate for using the Magic Wand tool because the entire "5" is blue, and the surrounding area is a light gray shadow. For the collage you're creating in this lesson, you'll select and move just the number, not the shadow or background behind it.

Select the Magic Wand tool ().

On the tool options bar, scrub the Tolerance label or type 70 in the Tolerance text box to increase the number of similar tones that will be selected.

[View full size image]

Using the Magic Wand, click the surface of the large number "5" object. Most of it will be selected.

To select the remaining area of the number "5," hold down Shift so that a plus sign appears with the Magic Wand pointer. This indicates that whatever you click will be added to the current selection. Then, click one of the unselected areas of the blue number "5."

Note

When you use other selection tools, such as a marquee tool or a lasso tool, you can also use the Shift key to add to a selection. When you select the water lily in the next exercise, you'll learn how to subtract from a selection.

Continue adding to the selection until all the blue areas are selected. If you accidentally select an area outside the blue number, choose Edit > Undo, and try again.

Leave the selection active so that you can use it in the next exercise.

Moving a selected area

Once you've selected an area of an image, any changes you make apply exclusively to the pixels within the selection marquee. The rest of the image is not affected by those changes.

To move the selected image area to another part of the composition, you use the Move tool. On a single-layer image like this one, the moved pixels replace the pixels beneath them. This change is not permanent until you deselect the moved pixels, so you can try different locations for the moved selection before you make a commitment.

If the blue "5" is not still selected, repeat the previous exercise to select it.

Select the Move tool (). Notice that the blue "5" remains selected.

Drag the selected area (the "5") to the upper left area of the collage so that a small area of the number overlaps the border of the book.

Choose Select > Deselect, and then choose File > Save.

In Photoshop, it's not easy to accidentally deselect. Unless a selection tool is active, stray clicks in the image will not deselect the active area. To deliberately deselect, you can use one of three methods: You can choose Select > Deselect, you can press Ctrl-D (Windows) or Command-D (Mac OS), or you can click outside the selection with one of the selection tools to start a different selection.

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

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