Adobe Photoshop CS4 - Manual (Page 365)

358 USING PHOTOSHOP CS4
Painting
Last updated 1/10/2010
5 To adjust the location of the starting or ending opacity, do one of the following:
• Drag the corresponding opacity stop to the left or right.
• Select the corresponding opacity stop, and enter a value for Location.
6 To adjust the location of the midpoint opacity (the point midway between the starting and ending opacities), do
one of the following:
• Drag the diamond above the gradient bar to the left or right.
• Select the diamond and enter a value for Location.
7 To delete the opacity stop you are editing, click Delete.
8 To add an intermediate opacity to the mask, click above the gradient bar to define a new opacity stop. You can then
adjust and move this opacity as you would for a starting or ending opacity. To remove an intermediate opacity, drag
its transparency stop up and off the gradient bar.
9 To create a preset gradient, enter a name in the Name text box, and click New. This creates a new gradient preset
with the transparency setting you specified.
Create a noise gradient
A noise gradient is a gradient that contains randomly distributed colors within the range of colors that you specify.
Noise gradient with different roughness values.
A. 10% roughness B. 50% roughness C. 90% roughness
1 Select the Gradient tool .
2 Click in the gradient sample in the options bar to display the Gradient Editor dialog box.
3 To base the new gradient on an existing gradient, select a gradient in the Presets section of the dialog box.
4 Choose Noise from the Gradient Type pop-up menu, and set the following options:
Roughness Controls how gradual the transitions are between color bands in the gradient.
Color Model Changes the color components you can adjust. For each component, drag the sliders to define the range
of acceptable values. For example, if you choose the HSB model, you can restrict the gradient to blue-green hues, high
saturation, and medium brightness.
Restrict Colors Prevents oversaturated colors.
Add Transparency Adds transparency to random colors.
Randomize Randomly creates a gradient that conforms to the settings above. Click the button until you find a setting
you like.
5 To create a preset gradient with the settings you’ve specified, enter a name in the Name text box, and click New.
A
B
C