Adobe photoshop cs2 用户手册
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ADOBE PHOTOSHOP CS2
User Guide
By default, the shadows, midtones, and highlights of the image are mapped respectively to the starting (left) color,
midpoint, and ending (right) color of the gradient fill.
midpoint, and ending (right) color of the gradient fill.
3
Select either, none, or both of the Gradient options:
Dither
Adds random noise to smooth the appearance of the gradient fill and reduces banding effects.
Reverse
Switches the direction of the gradient fill, reversing the gradient map.