Hi. It depends on what you are looking for.
If you aim for a fair amount of control over the process, you should standardize as much as possible and yes, make a curve for each layer.
I am doing the same thing these days.
Once you have done the curves, you should print an rgb target and make a profile by using a spectrophotometer.
Then, before you make ypur separations, ypu should convert your image in the icc profile ypu created.
Il 05 mar 2018 16:30, "sebastien.brias@... [QuadtoneRIP]" <QuadtoneRIP@yahoogroups.com> ha scritto:
Hi everyone,
i would like to use QTR for colour Gumprint.
I had adjust a curve for the cyanotype (first layer)
but as this process involve several layers with different settings (colour, exposure, etc)
Do i have to set up a different curve to each of the three colour CYM?
(because they don't "behave" the same)
AND a different curve to each stage (incrasing/decreasing exposure) ?
Or there is a way to create a single curve who can fit to the whole process?
Sébastien