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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Setting up a four-image montage


Now that you''ve finished preparing the four images, you''ll place them together in a new composite image. Using guides, you''ll be able to align the images precisely without a lot of effort.

Adding guides


Guides are nonprinting lines that help you align elements in your document, either horizontally or vertically. You can choose a Snap To command so that the guides behave like magnets: When you drag an object close to a guide, it will snap into place along the guide when you release the mouse button.


1.

Use Bridge or choose File > Open to open the Montage.psd file in the Lesson12 folder.

2.

Choose View > Rulers. A vertical ruler appears along the left side of the window and a horizontal ruler appears along the top of the window.

NoteIf the ruler units are not inches, choose Edit > Preferences > Units & Rulers (Windows) or Photoshop > Preferences > Units & Rulers (Mac OS); choose Rulers > Inches; and then click OK.

3.

If the Info palette is not visible, click the Info tab or choose Window > Info to bring it forward in its palette group.

4.

Drag down from the horizontal ruler to the middle of the image window, watching the Info palette to see the Y coordinate as you drag. Release the mouse when Y = 3.000 inches. A blue guide line appears across the middle of the window.

5.

Drag another guide from the vertical ruler to the middle of the image and release the mouse when X = 3.000 inches.

6.

Choose View > Snap To, and make sure that the Guides command is checked, or select it now.

7.

Choose View > Rulers to hide the rulers again.

Snapping images into position


Your guides are in place, so you''re ready to arrange your four cropped images in the montage.


1.

Choose File > Open Recent > Pears.jpg. The pears image opens in a separate image window.

2.

In the toolbox, select the Move tool ().

3.

Click the Move tool anywhere in the pear image and drag from that image window to the larger Montage.jpg window, and then release the mouse button.

4.

Still using the Move tool, drag the pears image into the upper left quadrant of the montage image so that its lower right corner snaps into place against the intersection of the two guides at the center of the window.

In the Layers palette, you''ll notice that the pears image is on a new layer, Layer 1.

5.

Choose Window > Pears.jpg to make it active again, and then close it, either by clicking the red Close button or by choosing File > Close.

6.

Repeat Steps 15 for the three other cropped files, placing the leaves image in the upper right quadrant, the dandelion in the lower left quadrant, and the sand in the lower right quadrant. All the images should snugly abut the intersection of the guides in the center of the window.

7.

Choose View > Show > Guides to hide the guides.

EXTRA CREDIT
Precise alignment using Smart Guides. Although we were able to easily align the four images using centered guides, Smart Guides are an excellent way to align photos and objects with greater precision. Using your working file as it is after the "Snapping images into position" exercise, you can experiment with another way to align these photos, or you can continue with your lesson and try this technique some other time.


1.

Select the dandelion layer. Drag in the image window with the Move tool to move it out of alignment. Repeat for the leaves and sand layers. (The images will have different layer numbers, depending on the order in which you created them.)

2.

Choose View Show > Smart Guides.

3.

Select the sand layer, and (still using the Move tool) drag to line up its left edge with the right edge of the dandelion layer. Pink Smart Guides appear when the images are aligned.

4.

Next, select the dandelion layer and then Shift-click to also select the sand layer. Use the Move tool in the image window to move them together so that the top of the dandelion image aligns with the bottom of the pear image.

5.

Select the leaves layer and drag to square it up with the other three images, as in the illustration below. Smart Guides will show you when each image is aligned in Steps 3, 4, and 5.

6.

Choose View > Show > Smart Guides to turn off the Smart Guides when you''re done.

Saving selections


Next, you''ll select the two pears and save the selections. Later in this lesson, you''ll use your saved selections to colorize the pears and to add a special effect.


1.

In the toolbox, select the Zoom tool (), and drag a marquee around the pears to magnify your view. Make sure that you can see all of both pears in the image window.

2.

Select the Magnetic Lasso tool (), hidden under the Lasso tool ().

For best results when tracing the pear stem with the Magnetic Lasso tool, decrease the tool''s lasso Width and Frequency values on the tool options bar. For example, try tracing the pear using a Width of 1 or 2 pixels and a Frequency of 40.

3.

Click once to set a point on the edge of the pear on the right, and then move the pointer (you do not need to hold down the mouse button) around the pear to trace its outline.

As you move the pointer, the active segment snaps to the strongest edge in the image. Periodically, the Magnetic Lasso tool adds fastening points to the selection border to anchor sections. Try to make your selection a reasonably accurate outline of the pear, but don''t worry if it''s not perfect.

Lesson 7, "Masks and Channels."

5.

Choose Select > Save Selection. Name the selection Right Pear, and click OK to save the selection in a new channel.

6.

Choose Select > Deselect to deselect the right pear.

7.

Repeat Steps 26, this time selecting the left pear and saving the selection as Left Pear. Then choose Select > Deselect, or press Ctrl-D (Windows) or Command-D (Mac OS).

8.

To see your two saved selections, click the Channels tab to open the palette, and scroll down, if necessary. Click each pear channel name in turn to see the channel masks appear in the image window.

9.

When you''re ready to continue working, scroll to the top of the Channels palette and click the RGB channel to select it, and click to remove the eye icons from the Right Pear and Left Pear channels, if necessary. Then, click the Layers tab to bring that palette forward for the next procedure.

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