QTR-Quadtone RIP

--- In QuadtoneRIP@yahoogroups.com, "ccolbertbw" <ccolbert@u...> wrote:
...
> For some reason the PKN on Luster paper builds up density in a very
> nonlinear manner. The density curve is very steep, then flattens 
> out. But you don't want to ignore that top part of the curve by setting
> an early ink limit because it means the difference between a dmax of 
> 2.0  vs 2.3.

Costa, I haven't had time to finish my testing, but I have learned a
few things so far. You are right about the aparent lack of sense using
ink limits to initially bring things in line, therefore losing dmax.
But, it's the way QTR seems to work best, and Roy designed in K boost,
which allows you to bring all the way back to native unlimited output
in that ink (if needed), so you can "unlimit" there. For straight
quads, there is way too much ink going down to get effective
partitioning unlimited.

Until I learn otherwise, it seems the best route is to bring things
well into line with limits, gamma, highlight, and shadow controls,
then bring dmax in with K boost (and maybe a bit of overlap), and
linearize.

Tyler