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QTR-Quadtone RIP

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Re: ink partitioning for digital negatives

2017-11-25 by efo@...

That's a great question, and I'm sure others in this group will have a better sense of how to do it than I. When I've done similar things, I've chosen to assume that there is a predominant blocking color (in your case, probably K and LK) and choose a crossover point for that.

If the crossover point for Y and C was wildly different from that for K and LK, I suppose you might see a bad transition in the crossover region, but it's going to be smoothed out by the overlap in the curves that QTR generates. I suppose that K+Y and LK+C could behave so differently from either of the component colors (under UV light) that you'd get bad behavior, but I'd doubt it.

In short, I'd pick a crossover based on K & LK and then see what you get. Any wrinkles in the results can probably be linearized out.

I'd love it if you'd report how it works once you do it!

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