Adobe 13101332 User Guide - Page 268

Adobe Photoshop Help Using Help | Contents | Index Using Channels and Masks Back 268 Selecting and editing channels You can select one or more channels in the Channels palette. The names of all selected, or active, channels are highlighted. Any editing changes you make apply to the active channels. To select a channel: Click the channel name. Shift-click to select (or deselect) multiple channels. To edit a channel: Use a painting or editing tool to paint in the image. Paint with white to add the selected channel's color at 100% intensity. Paint with a value of gray to add the channel's color at a lower intensity. Paint with black to fully remove the channel's color. Managing channels (Photoshop) You can rearrange channels, duplicate a channel within or between images, split a channel into separate images, merge channels from separate images into one new image, and delete alpha and spot channels when you're finished with them. Rearranging and renaming channels The default color channels normally appear at the top of the Channels palette, followed by the spot color channels, and then the alpha channels. You cannot move or rename the default channels, but you can rearrange and rename spot and alpha channels to suit the way you work. Spot colors are overprinted in the order they appear in the Channels palette. To change the order of alpha or spot channels: Drag the channel up or down. When a line appears in the position you want, release the mouse button. Note: You can move alpha or spot channels above the default color channels only if the image is in Multichannel mode. To rename an alpha or spot channel: Double-click the channel's name in the Channels palette, and enter a new name. Duplicating channels You might duplicate an image's channel to make a backup before editing the channel. Or you might duplicate alpha channels to a new image to create a library of selections to load into the current image one by one-thus keeping the file smaller. If you are duplicating alpha channels between images, the channels must have identical pixel dimensions. (See "Creating new images" on page 73.) Note: You cannot duplicate a channel to a Bitmap-mode image. To duplicate a channel using the Duplicate command: 1 In the Channels palette, select the channel to duplicate. 2 Choose Duplicate Channel from the Channels palette menu. 3 Type a name for the duplicate channel. Using Help | Contents | Index Back 268