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Table Of Contents
Reversing the two overlapping images results in subtle differences in how the overlapping
midrange color values are mixed together.
Boxes object on top Monkey object on top
Linear Dodge
Similar to Screen, except that lighter midrange color values in overlapping regions become
intensified. Blacks in either image allow the overlapping image to show through
completely. Whites from both images show through in the resulting image.
The order of two layers affected by the Linear Dodge blend mode does not matter.
Overlay
Whites and blacks in the foreground image become translucent and interact with the
color values of the background image, causing intensified contrast. Whites and blacks in
the background image replace the foreground image.
Overlapping midrange values are mixed together differently depending on the brightness
of the background color values. Lighter background midrange values are mixed by
screening. Darker background midrange values are mixed by multiplying.
The visible result is that darker color values in the background image intensify the
foreground image, while lighter color values in the background image wash out
overlapping areas in the foreground image.
302 Chapter 7 Basic Compositing