Adobe Premiere Pro CS4 - Manual (Page 356)

350 USING ADOBE PREMIERE PRO CS4
Effects and transitions
Last updated 11/6/2011
• Reduce Saturation Moves the pixel’s color toward a gray of similar brightness, making the pixel less colorful. For
the same IRE level, reducing saturation alters the image more noticeably than does reducing luminance.
Maximum Signal Amplitude (IRE) The maximum amplitude of the signal in IRE units. A pixel with a magnitude above
this value is altered. The default is 110. Lower values affect the image more noticeably; higher values are more risky.
Change Color effect
The Change Color effect adjusts the hue, lightness, and saturation of a range of colors.
View Corrected Layer shows the results of the Change Color effect. Color Correction Mask shows the areas of the layer
that will be changed. White areas in the color correction mask are changed the most, and dark areas are changed the
least.
Hue Transform The amount, in degrees, to adjust hue.
Lightness Transform Positive values brighten the matched pixels; negative values darken them.
Saturation Transform Positive values increase saturation of matched pixels (moving toward pure color); negative
values decrease saturation of matched pixels (moving toward gray).
Color To Change The central color in the range to be changed.
Matching Tolerance How much colors can differ from Color To Match and still be matched.
Matching Softness The amount that unmatched pixels are affected by the effect, in proportion to their similarity to
Color To Match.
Match Colors Determines the color space in which to compare colors to determine similarity. RGB compares colors
in an RGB color space. Hue compares on the hues of colors, ignoring saturation and brightness—so bright red and
light pink match, for example. Chroma uses the two chrominance components to determine similarity, ignoring
luminance (lightness).
Invert Color Correction Mask Inverts the mask that determines which colors to affect.
Change To Color effect
The Change To Color effect changes a color you select in an image to another color using hue, lightness, and saturation
(HLS) values, leaving other colors unaffected.
Change To Color offers flexibility and options unavailable in the Change Color effect. These options include tolerance
sliders for hue, lightness, and saturation for exact color matching, and the ability to select the exact RGB values of the
target color that you wish to change to.
Original image (left), with saturation removed in the planet (center), and with light green changed to yellow in the planet (right)
From The center of the color range to change.
To The color to change matched pixels to.
To animate a color change, set keyframes for the To color.