Anaglyph Setting (Gray)...

Anaglyph color and contrast (gamma) may be specified.
The 'color' and 'half color' options are grayed-out for Gray Anaglyphs.

Color may be red/cyan,red/green, red/blue or yellow/blue and the individual left and right images may be viewed or the resulting anaglyph displayed.
By convention, red is always the Left image.

Gamma for each image may be set from 0.01 to 5.0 and the images average density is displayed.