User Guide

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ADOBE AFTER EFFECTS 5.0
User Guide
To set the zero point in rulers:
Drag the cross hair from the intersection of the two rulers (in the upper left corner) into
the image area.
To create, reposition, lock, hide, or remove a guide line:
Do any of the following:
• Position the pointer inside either ruler and drag where you want to create a guide line.
• In the image area, drag a guide to reposition it.
• To lock or unlock guides, choose View > Lock Guides.
• In the image area, drag a guide line into a ruler to remove it.
• To display or hide all guide lines, choose View > Show Guides or Hide Guides.
• To remove all guide lines, choose View > Clear Guides.
Viewing color and alpha channels
You can preview the red, green, blue, and alpha channels of a still image or movie in a
Footage window, Layer window, or Composition window. When you view a color channel,
areas with that color are displayed according to the color value of each pixel. For example, if
you view the red channel, areas with high red values are displayed as white.
To see the color values in a color channel displayed in the channel’s own color instead of
white, hold down Shift and click the desired color channel icon.
When you preview the alpha channel, After Effects displays transparent and opaque areas as
black and white to make identification easier. Degrees of opacity appear as shades of gray.
UG.book Page 57 Wednesday, February 21, 2001 12:05 PM