Apple Motion 2 - Manual (Page 257)

Chapter 3 Basic Compositing 257
Add
Add emphasizes the whites in each overlapping image, and lightens all other
overlapping colors. The color values in every overlapping pixel are added together. The
result is that all overlapping midrange color values are lightened. Blacks from either
image are transparent, while whites in either image are preserved.
The order of two objects affected by the Add blend mode does not matter.
Suggested uses: The Add blend mode is useful for using one image to selectively
texturize another, based on its lighter areas such as highlights. You can also use
Lighten, Screen, Color Dodge, and Linear Dodge to create variations of this effect.
01112.book Page 257 Sunday, March 13, 2005 10:36 PM