QTR-Quadtone RIP

What is the difference, if any,  between linearization in QTR between the function GRAY_CURVE =, inserted into the, profile as opposed to the function LINEARIZE=.

Sandy









--- In QuadtoneRIP@yahoogroups.com, Roy Harrington <roy@...> wrote:
>
> Basically you want to order the measurements (either L values or density):
> white to black -- for regular prints
> black to white -- for negatives.
> 
> It recognizes L vs d by the size of the numbers.
> 
> Roy
> 
> 
> On Sat, Jun 15, 2013 at 6:35 PM, kumagaikentaro <homepage@...>wrote:
> 
> > Hi bill_iverson
> >
> >  I realized that I had been wrong.
> >
> > *For paper(positive print) the L* values start out Highlight to Shadow
> >
> > LINEARIZE="96.74 93 88.19 82.72 77.16 71.92 66.64 61.62 56.83 52.7 48.63
> > 44.81 41.48 37.83 34.41 31.15 27.96 24.93 22.87 21.09 18.95"
> >
> >
> >
> > *For Altanative(Negative print) the L* values start out Shadow to Highlight
> >
> > LINEARIZE="26.3 27.6 31.2 35.8 39.6 42.8 46.2 47.9 50.4 52.9 56.4 60.5
> > 64.1 67.2 70.5 73.4 75.9 78.6 81.3 86.3 95.0 "
> >
> >
> > I don't try about "Optical density" (ect 0 ~ 1.3) @I don't have a density
> > meter.
> > If you're using "density meter",
> > Please convert the "Density" and "Lab"
> >
> > Companding Calculator
> > http://www.brucelindbloom.com/CompandCalculator.html
> >
> > And "Linearization Checker" is useful
> >
> > http://shopping.netsuite.com/c.362672/site/techdocs/Custom_Profiling_Package.zip
> >
> > Regards,
> > Kentaro Kumagai
> >
> >
> >
> >
> > --- In QuadtoneRIP@yahoogroups.com, "bill_iverson_washington"
> > <bill.iverson@> wrote:
> > >
> > > I've recently been told that QTR can directly linearize profiles for
> > digital negatives by entering 21-step density values read from a print made
> > from the digital negative, so that the density values start out high and
> > decrease (e.g., 1.30, 1.24, 1.18 ... 0.05).  Sure enough, when I enter
> > these values in the linearization tab, QTRgui Curve Creation generates new
> > Ink Curves for the profile, which seem to be modified from the previous Ink
> > Curves generated simply with the ink description.
> > >
> > > My question is how do I know if my installed QTR has the newest version
> > of this digital negative linearization feature?  A posting by Kentaro
> > Kumagi in June 2012 (msg. 10358 Re: "starter profiles" for digital
> > negatives) provides a link to a "fixed patch for Win QTR ... given by Roy
> > [Harrington]" which provides this capability.  I never installed such a
> > patch,a but the fact that my QTR linearization tab will accept density
> > values running from high to low suggests I somehow acquired the capability
> > (I think).  I believe I have QTR 2.7.2, downloaded in the past year, but
> > determining just what I have is hard since "QTR 2.7.2" apparently still
> > uses the 2.7.0.0 QTRgui Windows interface.  My QTR "About" panel and hard
> > drive info indicate I have the following modules:
> > > QTRgui 2.7.0.0 file date 3/27/2010 size 10,574,404
> > > QuadToPrinter 2.7.2.0 file date 8/14/2011 size 827,392
> > > QuadProfile 2.7.2.0 file date 9/8/2011 size 917,570
> > >
> > > Sorry to pose such a tedious question, but using the wrong linearization
> > feature or using it in the wrong way would make my already somewhat
> > time-consuming and expensive efforts to create digital negative profiles
> > for PtPd printing even so.  Thanks.
> > >
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> 
> 
> -- 
> Roy Harrington
> roy@...
> www.harrington.com
> 
> 
> [Non-text portions of this message have been removed]
>