QTR-Quadtone RIP

Ed,
I have done the same thing.  My impression is that boost K only 
impact the very deep shadow.  When checking the curves, I only see a 
change in the area above about 85% and have not noted the cool curves 
becoming much warmer.  It is interesting that we are all having 
problems getting good dmax from the premade curves.  My results in 
terms of d max are very similiar to yours.  I am using Innova ultra 
smooth glossy.
Leping,  Are you interested in sharing Richard Lohman's curves or 
setting?  I am familiar with his work, and really like what he is 
doing.  
Thanks,
Peter


--- In QuadtoneRIP@yahoogroups.com, "edrudolpho" <erudolph@...> wrote:
>
> Hi Leping.... I tried some split-tones with the curves supplied for
> silver rag.  Like you I noticed a real decrease in dmax from the ABW
> prints I'd been making (from say 2.4ish to about 2).  Like you I
> opened the curves and noticed the Boost K value seemed low.  So I
> increased it to 100 and printed some more tests wedges.  Then I
> realized that you can't get a truly cool curve if you have the K 
value
> that high, because the K ink is intrinsically warm.
> 
> Ed
> 
> --- In QuadtoneRIP@yahoogroups.com, "Leping Zha" <leping@> wrote:
> >
> > 
> > Hi Roy,
> > 
> > 
> snip
> 
> > 
> >     What happens if I use the [100/25/7] results to create new 
curves?
> >     I have to say I did try to fool the QTR software to install 
the
> >     4800 curved for the QTR3800 printer (by changing the folder 
name),
> >     but the results were very bad with heavy color casts so the
> >     direct substitution is not a solution.
> > 
> > Thank you so much for your patients (and all who is following me
> > this far) reading this long post.
> > 
> > Yours very truly,
> > Leping
> > San Mateo, California
> > www.lepingzha.com <http://www.lepingzha.com>
> > 
> > 
> > 
> > 
> > [Non-text portions of this message have been removed]
> >
>