Channel mask
A special channel you can add to any object, a channel mask contains
grayscale pixels that represent transparency. Drag a color or alpha
channel to the channel mask slot to create a channel mask. You can
drag a channel mask into the channel list to create a new alpha channel.
Viewing previews in the Channels palette
To view previews in the Channels palette, choose Palette Options in
the palettes pop-up menu. Click the size of the preview you want to
display, or click None. Click OK to close the dialog box.
Channels palette options
Use the Channels palette to
work with channels when a
paint object is in edit mode.
Active channels are shaded.
Editing affects the active chan-
nels only. To make a channel
active, click the channel name.
A Composite channel. Select
this channel to make all color
channels visible and active.
B Color channels. Color
channels appear below com-
posite channels.
C Alpha channels. Alpha
channels contain grayscale pix-
els which represent a selection.
D Channel mask. A special
channel you can add to any ob-
ject, a channel mask contains
grayscale pixels that represent
transparency.
E An eye indicates that a
channel is visible. If a channel is
not visible, click or drag in
the column to make it vis-
ible.
F
Click to make a new
alpha channel with de-
fault settings. Drag an al-
pha channel here to du-
plicate it.
G Click to save the cur-
rent selection in an alpha
channel. Drag a channel
here to make a selection
in the image from the
channel.
Floating Opacity. If a
selection is floating, drag
the slider to change the
opacity of the selection.
Mode. If a selection is
floating, select a mode from the
menu. The default mode is
Normal.
H Drag channels to the trash
to delete them. You cannot de-
lete color channels.
Preserve Visibility. Select this
option to preserve the transpar-
ency of clear and partially trans-
parent pixels when you edit an
image.
C
A
B
E
D
F
G
H