Chapter 7. Duotones and Tritones
In a duotone, the darker portions of the picture are toned with one color, and the lighter portions are tinted with another.
Duotones come from the days of colored black-and-white movies, where the truly ambitious filmmaker could shoot film on a colored base to tint the highlights (as described in Chapter 23, “Vintage Film”), and then use one of a variety of toning processes to color the shadows, thereby achieving a dual-color image. Granted, this is not an effect you’re necessarily going to use all the time, but it can be useful for stylized imagery.
Many filters are available for NLEs and compositing applications that create a duotone look; simply choose the two colors you want to use to tint the shadows and ...
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