Re: seperating duotone You can make the duotone using layers as shown below,
When you are satisfied, merge the curves with the layers, and copy the now merged layers to channels.
Convert the grayscale images to a profile with enough dot gain before you make the halftones.
You may need to use transparent (process) inks on white background to get a good match with, what you see on the screen. I don't think fully opaque inks will mix to a smooth gradient. |