Adobe PREMIERE 5 User Manual page 272

264 CHAPTER 8
Superimposing and Compositing with Transparency
3 Choose a key from the pop-up menu.
The default key type is None. At this setting, no part of the superimposed image is keyed out.
However, you can set the opacity of the image by adjusting the Fade control in the Timeline
(see "Using the Fade control" on page 261). You can also use the None key type for creating
split screens and other effects where a portion of the underlying image is visible (see "Creating
split screens" on page 275).
Click one of the following icons to view transparency:
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Places a black or white background behind the keyed-out image. Click to toggle between
black and white.
Displays a checkerboard pattern to help you view transparency in areas that may be difficult
to see against a solid background or against the actual underlying image. Click to reverse the
checkerboards.
Displays the actual underlying image in your project. This view may be slower to display
when you drag the preview slider under the Sample box.
To zoom in on the image in the Sample area, select the Zoom icon, and then click on an
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area of the image. Click again to increase the zoom. You can zoom up to 10x the original
view. To zoom out, hold down the Alt key (Windows) or the Option key (Macintosh) and
click the image with the Zoom icon selected. To view other areas of the image at the same
zoom, select the Hand icon, and drag the image. On Mac OS only, you can click the
Collapse icon ( ) to move the image to the Program view in the Monitor window.
Select the following options as needed:
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Reverse Key to reverse transparent and opaque areas (available only for certain keys).
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Drop Shadow to add a 50% gray, 50% opaque shadow to opaque areas (available only for
•
certain keys). The shadow is placed four pixels below and to the right of any contiguous
opaque region. Drop Shadow is most effective for titles or simple graphics.
Mask Only (Windows) or Mask View (Mac OS) to produce a special effect that displays only
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the alpha channel matte view of the clip (available only for certain keys).