Apple Motion 2 - Manual (Page 258)

258 Chapter 3 Basic Compositing
Lighten
Lighten emphasizes the lightest parts of each overlapping image. Every pixel in each
image is compared, and the lightest pixel from either image is preserved, so that the
final image consists of a dithered combination of the lightest pixels from each image.
Whites in both images show through in the resulting image.
The order of two objects affected by the Lighten blend mode does not matter.
Screen
Like Lighten, Screen also emphasizes the lightest parts of each overlapping image,
except that the midrange color values of both images are mixed together more evenly.
Blacks in either image allow the overlapping image to show through completely.
Darker midrange values underneath a certain threshold allow more of the overlapping
image to show. Whites from both images show through in the resulting image.
The order of two objects affected by the Screen blend mode does not matter.
01112.book Page 258 Sunday, March 13, 2005 10:36 PM