ADOBE AFTER EFFECTS 7.0
User Guide
117
Show Channel menu Toggles RGB, Red, Green, Blue, and Alpha settings, and offers RGB Straight and Colorize
modifiers. RGB is the default setting, which displays the complete, full-color RGB picture. Red, Green, and Blue
settings display the indicated color channel, with high color values displayed as white. The Alpha setting displays
transparent and opaque areas as black and white, respectively, with degrees of opacity as shades of gray. RGB Straight
toggles between premultiplied and RGB straight alpha channel interpretation modes. Colorize displays the Red,
Green, and Blue channels in their respective colors instead of black and white.
Resolution/Down Sample Factor menu Specifies the resolution for the current composition.
Region Of Interest button Narrows the composition area for previewing. See “Changing the region of interest”
on page 118.
Toggle Transparency Grid button Toggles between viewing a checkerboard background to display transparency
and viewing the background color.
3D View menu Specify a view for a 3D layer from the menu. See “About 3D views” on page 177.
Select View Layout menu Toggles between 1-view, 2-view, and 4-view layout options. By default, viewer options
(grids, rulers, etc.) affect only the currently selected view; choosing Share View Options from this menu applies
changes to all viewers in the current layout. Holding down Ctrl (Windows) or Command (Mac OS) momentarily
reverses this option.
Turning the mouse wheel with the pointer over the Select View Layout menu button scrolls through the available
view layouts.
Toggle Pixel Aspect Ratio Correction button Toggles between turning on and off pixel aspect ratio correction.
Turn on Pixel Aspect Correction to squash or stretch an image and correct a non-square pixel aspect ratio. Pixel
Aspect Correction has no effect on square-pixel compositions, layers, or footage. It also has no effect when you create
files with the Make Move or Export command. Because the scaling is not of high quality, use Pixel Aspect Correction
to evaluate shapes, not fine pixel details.
Fast Previews button Specify a preview option from the menu, or choose Fast Previews Preferences to access the
Previews Preferences dialog box.
Timeline button Brings forward the Timeline panel for the current composition.
Comp Flowchart button Brings forward the Flowchart View for the current composition. See “About the
Flowchart panel” on page 59.
To set background or pasteboard color
The default background color for the Composition panel is black, but you can change the color at any time. When
you add one composition to a second composition (nesting), the second composition’s background color is
preserved, and the first composition’s background becomes transparent. If you want to preserve the first compo-
sition’s solid background color, then create a new, colored solid to use as a background layer in the first composition.
You can also change the color of the pasteboard in the Composition panel.
1 Do one of the following:
• To set the background color of a composition, choose Composition > Background Color.
• To set the pasteboard color of all After Effects compositions, choose Edit > Preferences > User Interface Colors
(Windows) or After Effects > Preferences > User Interface Colors (Mac OS).
2 Click the color swatch to select a color, or click the eyedropper to sample a color from anywhere on the screen.
Then click OK.
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