5

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 layers affected by the Multiply blend mode does not matter.
Suggested uses: The Multiply blend mode is 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.
Color Burn
Color Burn intensifies the dark areas in each image. Whites in the background image
replace the foreground image, while whites in the foreground image become transparent.
Midrange color values in the background image allow midrange color values in the
foreground image to show through.
Lighter midrange color values in the background image allow more of the foreground
image to show through. Darker midrange values in all visible overlapping areas are then
mixed together, resulting in intensified color effects.
298 Chapter 7 Basic Compositing