Color pass effect (windows only), Color replace effect (windows only), Gamma correction effect – Adobe Premiere Pro CS4 User Manual
Page 381: Keying effects, Alpha adjust effect, Blue screen key effect (windows only)
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USING ADOBE PREMIERE PRO CS4
Effects and transitions
Last updated 11/6/2011
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Match the color between two scenes
Color Pass effect (Windows only)
The Color Pass effect converts a clip to grayscale, with the exception of a single specified color. Use the Color Pass
effect to highlight a particular area of a clip. For example, in a clip of a basketball game, you could highlight the
basketball by selecting and preserving its color, while keeping the rest of the clip displayed in grayscale. Note, however,
that with the Color Pass effect, you can isolate only colors, not objects within the clip.
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Isolate a single color using Color Pass
Color Replace effect (Windows only)
The Color Replace effect replaces all occurrences of a selected color with a new color, preserving any gray levels. Using
this effect, you could change the color of an object in an image by selecting it and then adjusting the controls to create
a different color.
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Gamma Correction effect
The Gamma Correction effect lightens or darkens a clip without substantially changing the shadows and highlights. It
does this by changing the brightness levels of the midtones (the middle-gray levels), while leaving the dark and light
areas unaffected. The default gamma setting is 10. In the effect’s Settings dialog box, you can adjust the gamma from
1 to 28.
Keying effects
Alpha Adjust effect
Use the Alpha Adjust effect in place of the Opacity effect when you need to change the default render order of Fixed
effects. Change the opacity percentage to create levels of transparency.
The following Alpha Adjust effect settings let you interpret the alpha channel in the clip:
Ignore Alpha
Ignores the alpha channel of the clip.
Invert Alpha
Reverses the transparency and opaque areas of the clip.
Mask Only
Applies the effect only to a masked area.
Blue Screen Key effect (Windows only)
The Blue Screen Key effect creates transparency from true chroma blue. Use this key to key out well-lit blue screens
when creating composites.