Adobe AFTER EFFECTS CS3 PROFESSIONAL User Manual page 393

AFTER EFFECTS CS3 387
User Guide
Input sliders moved so that output uses full tonal range
Histogram showing highlight clipping
Histogram showing shadow clipping
Auto Color and Auto Contrast effects
The Auto Color effect adjusts the contrast and color of an image after analyzing the shadows, midtones, and
highlights of the image. The Auto Contrast effect adjusts the overall contrast and mixture of colors. Each effect maps
the lightest and darkest pixels in the image to white and black, and then redistributes the intermediate pixels. The
result is that highlights appear lighter and shadows appear darker.
Because Auto Contrast and Auto Color don't adjust channels individually, they don't introduce or remove color casts.
The Auto Levels effect uses many of the same controls as the Auto Color and Auto Contrast effects.
These effects work with 8-bpc and 16-bpc color.
The range of adjacent frames, in seconds, analyzed to determine the amount of correction
Temporal Smoothing
needed for each frame, relative to its surrounding frames. If Temporal Smoothing is 0, each frame is analyzed
independently, without regard for surrounding frames. Temporal Smoothing can result in smoother looking correc-
tions over time.
If selected, frames beyond a scene change are ignored when surrounding frames are analyzed for
Scene Detect
temporal smoothing.