Applying effects using a gradient mask
When you load a gradient as a selection and then fill the selection with a color, the opacity of the fill color varies over the length of the gradient. Where the gradient is black, no fill color is present; where the gradient is gray, the fill color is partially visible; and where the gradient is white, the fill color is completely visible.
| 1. | In the Channels palette, click the RGB channel to display the full-color preview, and then click the Gradient channel eye icon ( ) to hide that channel.Next, you'll load the Gradient channel as a selection. | | 2. | With the RGB channel selected, drag the Gradient channel to the Load Channel as Selection button ( ) at the bottom of the palette to load the gradient as a selection. A selection border appears in the image window. Although the selection border appears over only about half the image, it is correct. | | 3. | Make sure that the background color is set to white and the foreground color is set to black. If necessary, click the Default Foreground and Background Colors icon ( ) at the lower left corner of the color-selection boxes. | | 4. | Press Delete to fill the gradient selection with the background color (white). | | 5. | Choose Select > Deselect to deselect everything. | | 6. | Choose File > Save.You have completed this lesson. Although it takes some practice to become comfortable using channels, you've learned all the fundamental concepts and skills you need to get started using masks and channels. |
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