Apple Motion 3 - Manual (Page 296)

296 Chapter 3 Basic Compositing
Suggested uses: The Darken blend mode is useful for using one image to texturize
another selectively, based on its darker areas. You can also use Screen, Color Burn, and
Linear Burn for variations on this effect.
Multiply
Like Darken, Multiply emphasizes the darkest parts of each overlapping image, except
that midrange color values from both images are mixed together more evenly.
Progressively lighter regions of overlapping images become increasingly translucent,
allowing whichever image is darker to show through. Whites in either image allow the
overlapping image to show through completely. Blacks from both images are
preserved in the resulting image.
The order of objects affected by the Multiply blend mode does not matter.
Suggested uses: The Multiply blend mode is particularly useful in situations where you
want to knock out the white areas of a foreground image and blend the rest of the
image with the colors in the background. For example, if you superimpose a scanned
sheet of handwritten text over a background image using the Multiply blend mode,
the resulting image becomes textured with the darker parts of the foreground.