Re: the look of tricolor vs CMYK
That's seriously bent Keith ;^). With the technique(s) like the one you've outlined below, do you do a mock up in photoshop first to give you an idea of what the final "look" will be? Or is it more like pottery where you don't know until it comes out of the oven? (or you keep sending it back to the kitchen until it looks right?) Do you have a name for this cross colour mapping technique? What does the label on the Photoshop Layer read on that Blue-Inverted-Magenta (80% difference) channel? >" My negatives come from a combination of CMYK and RGB and might include something as specialized as a negative that is produced from the 80% difference between the blue channel and the inverse of the magenta channel as defined in the Calculations function of Photoshop" I'm guessing to get a turquoise layer requires a special selection technique? >"or a "spot" channel that included only the turquoise in the original non-separated image. So I might start out with 7 negatives, but the end result might use three or four or all seven negatives to apply the same gray pigment. So what do you call that? I call it a "gum print". And I call it that even if it happens to also use a cyano or vandyke layer in the mix. " This kind of info is invaluable. It sort of blows the door open for trying new things. It's a very three dimensional approach. One of the things that really interests me is the "decision" making process with gum. Thank you for sharing it. ~m
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