Adobe After Effects CS3 - Manual (Page 529)

AFTER EFFECTS CS3
User Guide
524
• Center Texture Positions the texture in the middle.
• Stretch Texture To Fit Stretches the texture to the dimensions of the effect layer.
Threshold effect
The Threshold effect converts grayscale or color images to high-contrast, black-and-white images. Specify a certain
level as a threshold; all pixels lighter than the threshold convert to white and all pixels darker convert to black.
This effect works with 8-bpc and 16-bpc color.
Effect applied with threshold settings of 44 (left), 70 (center), and 200 (right)
Text effects
Basic Text effect
The Basic Text effect places text on an existing layer—unlike text created on text layers or imported text created in
Adobe Photoshop or Adobe Illustrator, either of which becomes its own layer. Use text layers for greater control over
text formatting and text animation. (See Text.)
This effect works with 8-bpc color.
Original (top left) and after applying Basic Text (bottom left) and selecting Composite On Original (bottom right)
After Effects creates an alpha channel for text it creates. You can use a text effect’s alpha channel with features such
as track matte.
Note: The width and height of text aren’t constrained by the dimensions of the layer; the layer dimensions merely define
the visible region of the text. This feature makes it simple to scroll text over a layer.
Position The position of the text on the layer.