Apple Motion 4 - Manual (Page 984)

Gamma
The Gamma filter adjusts the relative distribution of brightness within the midtones of
an image, while leaving the white and black points alone. The perceived result is to
brighten and darken the areas of medium brightness within an image, while leaving the
highlights and shadows untouched. This avoids a washed-out result.
This is one of the most useful filters for correcting poor exposure in images, and should
almost always be used first before trying the Brightness filter.
Original image Gamma filter applied
Parameters in the Inspector
Gamma: Sets the gamma correction.
Mix: Sets what percentage of the original image is blended with the color-corrected
image.
HUD Controls
The HUD contains the following control: Gamma.
Gradient Colorize
Uses each pixel’s color value to determine the application of a color value from a gradient.
Original image Gradient Colorize with Rainbow gradient
984 Chapter 16 Using Filters