Datasheet

656
Creating Spot Color Separations
Editing a spot channel
After you create a spot channel, you can edit it. Select the channel in the
Channels panel and use a painting or editing tool to paint with black, white,
or any shade of gray, just as you would with an alpha channel. To change
any of the options of the spot channel, double-click the spot channel thumb-
nail, or select it and then select Channel Options from the panel pop-up
menu. Select a different color or solidity.
Converting an alpha channel to a spot channel
If you want to convert an alpha channel to a
spot channel, select the alpha channel in the
Channels panel and select Channel Options from
the panel’s pop-up menu. Rename the channel
and select Spot Color. Click the color swatch
and select a color from the Color Libraries sec-
tion of the Color Picker. Click OK, then click OK
again. Note that Photoshop converts all areas
containing nonwhite pixels (unselected to par-
tially selected areas) to the spot color. With the
channel still selected in the Channels panel,
choose Image➪Adjustments➪Invert to apply
the spot color to the white pixels or selected
areas of the alpha channel. For details on alpha
channels, see Book VI, Chapters 1 and 3.