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Photoshop CS Bible @Team LiB - Stacy C.

Stacy C. Photoshop CS Bible @Team LiB - Wiley Publishing, 2004. - 773 p.
Download (direct link): photoshopcsbible2004.pdf
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© 2004 ... Your company
Part III: Selections, Masks, and Filters
Figure 9-13: After drawing a linear gradation in the quick mask mode over the bottom of the image (left), I hid the image and applied the Add Noise filter with an Amount of 10 (right).
Banding can be a problem when you use a gradation as a mask. To eliminate the banding effect, apply the Add Noise filter at a low setting several times. To create the right example in Figure 9-13, I applied Add Noise using an Amount value of 10 and the Uniform distribution option.Tip In the right example of Figure 9-13, I hid the image so that only the gradient mask is visible. As the figure shows, the Channels palette lists the Quick Mask item in italics. This is because Photoshop regards the quick mask as a temporary channel. You can hide the image and view the gradient mask in black and white by clicking the eyeball in front of the color composite view, in this case RGB. Or just press the tilde key (~) to hide the image. Press tilde again to view the gradient mask and image together.
To apply the gradation as a selection, I returned to the marching ants mode by again pressing Q. I then Ctrl-dragged (z -dragged on the Mac) the selected portion of the mask and dropped it into the open field, as seen in the left half of Figure 9-14. Not content with this level of desecration, I also used a liberal amount of the Free Transform command (see Chapter 12), scorched the mask with the burn tool (see Chapter 5), and added dramatic lighting effects. The result is shown on the right in Figure 914. For the color version of this splendid image, see Color Plate 9-
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291 Photoshop CS Bible @Team LiB

Figure 9-14: The result of selecting the top portion of the mask using a gradient mask and then Ctrl-dragging (z -dragging on the Mac) and dropping the selection into the field (left). Throw in a little more tweaking, and you have your own personal Easter Island (right) minus the bunnies, of course.Applying special effects gradually
You also can use gradations in the quick mask mode to fade the outcomes of filters and other automated special effects. For example, I wanted to apply a filter around the edges of the image that appears in Figure 9-15. I began by deselecting everything in the image by pressing Ctrl+D (z -D on the Mac) and switching to the quick mask mode. Then I selected the gradient tool, selected the linear gradient style icon in the Options bar, and selected the Foreground to Transparent gradient from the

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Figure 9-15: This time around, my intention is to surround the foreground image with a gradual filtering effect.
© 2004 ... Your company
Part III: Selections, Masks, and Filters
I pressed D to make the foreground color black. Then I dragged with the gradient tool from each of the four corners of the image inward to create a series of short gradations that trace around the focal point of the image, as shown in Figure 9-16. (As you can see, I've hidden the image so that you see the mask in black and white.) Because I've selected the Foreground to Transparent option, Photoshop
adds each gradation to the previous gradation.
Figure 9-16: Inside the quick mask mode, I dragged from each of the four corners with the gradient tool (as indicated by the arrows).
To jumble the pixels in the mask, I applied Filter ® Noise ® Add Noise with an Amount value of 24. You see the effect in Figure 9-16.Tip
The only problem is that I want to select the outside of the image, not the inside. So I need the edges to appear white and the inside to appear black, the opposite of what you see in Figure 9-16. No problem. All I do is press Ctrl+I (z -I on the Mac) to invert the image. Inverting inside the quick mask mode produces the same effect as applying Select ® Inverse to a selection.
Finally, I switched back to the marching ants mode by again pressing Q. Then I applied Filter® Render
® Clouds to get the atmospheric effect you see in Figure 9-17.
Figure 9-17: After switching back to the marching ants mode, I chose Filter ® Render ® Clouds to create the foggy effect shown here.Tip
Notice the corners in the mask in Figure 9-16? These corners are soft and rounded, but you can
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293 Photoshop CS Bible @Team LiB

achieve all kinds of corner effects with the gradient tool. For harsher corners, select the Foreground to Background gradient and select Lighten from the Mode pop-up menu in the Options bar. For some really unusual corner treatments, try out the Difference and Exclusion brush modes. Wild stuff. Creating gradient arrows
The following steps explain how to add cool fading arrows to any image, similar to the one shown back in Figure 9-13. Photoshop not only makes it easy to use gradients for fading effects, but also makes it a breeze to create dramatic drop shadows for image elements, as demonstrated in Figures 9-18 and
9-19. The steps involve a gradient layer mask, the Free Transform command, the line tool, and a little old-fashioned layer opacity.STEPS: Creating Fading Arrows with Drop Shadows Draw an arrow with the line tool, creating a shape layer. First, select the line tool and make sure the Shape Layers button is selected in the Options bar. Click the Geometry Options and give your line an arrowhead at the end. No doubt a bit of trial-and-error will be necessary to get the right settings. (To create the arrow in the top example of Figure 9-18, I used a Weight of 25, both a Width and a Length of 400 percent, and a Concavity setting of 25 percent.) Set the foreground color to white and then drag to draw your arrow in the desired direction.
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