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QTR-Quadtone RIP

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Message

Re: linearization questions

2005-05-02 by Louis Dina

Hi Tyler.

I'm a little less proficient in QTR than I am with IJC/OPM, but I am 
pretty sure they work the same way in regards to linearization.  RIPs 
like StudioPrint allow you to multiple linearizations, one after 
another, but I know IJC doesn't work that way, and I am reasonably sure 
QTR doesn't either.

When you linearize, you are always doing it based on the raw curves 
built into the profile.  So relinearizing always goes back to raw data, 
or native state.

The gamma is a bit more arcane to me.  In IJC, I know you can set a 
gamma target point using a slider during profile creation to lighten or 
darken the midpoint of your grayscale.  I am assuming the gamma in QTR 
does the same thing.

Lou

--- In QuadtoneRIP@yahoogroups.com, "Tyler Boley" <tyler@t...> wrote:
> I am trying some odd things with inks that lay down a great deal of 
ink.
> Don't ask why <G>.
> 
> Two questions-
> 
> Is linearization iterative? In other words, will additional
> linearizations over a previous fine tune it, or will any linearization
> always be a correction from the "native state"?
> 
> If one enters a gamma of something other than 1 in the gray curve
> section to initially bring things more in line, will linearization
> correction include that gamma assuming the setting remains the same
> from there on out?
> 
> Thanks,
> Tyler

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