Corel Painter 2015 User's Guide download pdf (Page 599)

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Alpha Channels | 571

A channel is easiest to use as an overlay when its color contrasts strongly with the predominant hue of

the RGB image. You might want to use a different color for each channel.

5 Click OK.

6 Enable one of the following options to specify where the color overlay displays:

• Masked Areas

• Selected Areas

If you want to rename the channel, type a name in the Name box.

If you want the channel displayed at its full intensity, move the Opacity slider to 100%. Choose a

lower value to display the channel more transparently so you can follow the underlying RGB image

as you edit the channel.

Deleting and clearing channels

If you’ve finished working with a particular channel you can delete it. You can also clear a channel without

deleting it, leaving you with a blank channel.

To delete a channel

1 In the Channels panel, choose a channel from the list.

Click the Delete button at the bottom of the Channels panel.

You can also delete a channel by clicking the Channel options button , and choosing Delete.

To clear a channel

1 In the Channels panel, choose a channel from the list.

Click the Channel options button , and choose Clear.

Editing channels

You can edit a channel by modifying the size, shape, or opacity of its protected area, which ultimately

becomes the protected area of the selection. The changes that you make to the channel do not directly

affect the image until you load it as a selection. For more information, see “To load a selection from an

alpha channel” on page 592.

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Corel Painter 2015 User's Guide Page 599

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