Apple Color 1.0 - Manual (Page 186)

186 Chapter 9 Primary In
Note: To better illustrate the effect of the Shadow color control, the previous examples
were shown with Broadcast Safe disabled so that image values below 0 percent
wouldn’t be clipped.
Midtones Color Adjustments
Adjustments made with the Midtones color balance control apply the correction using
a Power operation (the new pixel value = old pixel value ^ adjustment). The result is
that midtones adjustments have the greatest effect on color values at 50 percent
lightness, and fall off as color values near 0 and 100 percent lightness.
This lets you make color adjustments that exclude the shadows and highlights in the
image. For example, you could add a bit of blue to the midtones to cool off an actor’s
skin tone, while leaving your shadows deep and untinted and your highlights clean
and pure.