Adobe 65021048 User Guide - Page 344

ADOBE PREMIERE PRO CS3 338 User Guide See also "About Luma Key" on page 372 Non Red Key effect The Non Red Key effect makes the clip's nonred (blue or green) pixels transparent. See also "About Non Red Key" on page 372 RGB Difference Key effect The RGB Difference Key effect creates transparency by removing pixels from a specified color or range of colors. Select a key color by clicking the Color swatch or by dragging the eyedropper to a color in the Monitor window. See also "About RGB Difference Key" on page 371 Remove Matte effect The Remove Matte effect removes color fringes from clips that are premultiplied with a color. It is useful when combining alpha channels with fill textures from separate files. If you import footage with a premultiplied alpha channel, or if you create alpha channels with After Effects, you may need to remove halos from an image. Halos are caused by a large contrast between the image's color and the background, or matte, color. Removing or changing the color of the matte can remove the halos. Use Background Color to specify the new background color when you want to change the color of a matte. Track Matte Key effect (High bit-depth) The Track Matte Key effect creates transparent areas in a clip that correspond to the luminance levels of another clip. Transparent areas reveal the image produced by clips in lower tracks. Exclude the matte clip from the output by selecting the clip and choosing Clip > Enable. See also "Move or change the transparent area with Track Matte Key" on page 375 "Compositing clips" on page 364 Noise & Grain effects Dust & Scratches effect The Dust & Scratches effect reduces noise and defects by changing dissimilar pixels within a specified radius to be more like their neighboring pixels. To achieve a balance between sharpness of the image and hiding defects, try various combinations of radius and threshold settings. April 1, 2008