QTR-Quadtone RIP

On 14 September 2010 23:05, Keith <kjrslr@...> wrote:

>
>
> I have this printed out and have read it but....
> First, this is Mac centric. I'm on a PC.
> Second, he used ProfileMaker Pro using an EyeOne(?). I have the
> Spyder3Print spectro.
> Third, he talks of going into PS when you hit the print button. When I open
> QTR>Tools>Options>Calibration Mode, the Ink Pattern Page is shown. When I
> hit print, it prints the page and I'm assuming that since it is printing
> without PS running, it is not color managed.
> Since I printed through QTR(no PS involved) I printed out the pages as I
> previously outlined, so it answered my own question about whether a 3rd one
> was needed.
> Following into step 9 and doing the math, I multiplied the LK(25%) by the
> LLK(31%) which gave me .0775 for the LLK number. Does this sound low?
>
No 7.75% seems about right to me. But you need to enter it as 7.75% no
0.0775

> In his second step 9 he says to use a text editor to open up the
> appropriate raw curve. This is where it looses me becuase it says that there
> are 4 raw curves from which to pick. Going into Program
> Files>QuadToneRip>Profiles>4800> I see three types of files. .amp, .raw, and
> .qidf. I see cool, coolse, sepia, warm.
>
.qidf.  =  cool, coolse, sepia, warm.  are the 4 curves. But you can use the
windows GUI that you have been using rather than editing the text file
directly. If you want to view the qidf file use wordpad. To do this put a
short cut to wordpad on your desktop and drop the qidf file on it....

Mike

>
>
> --- In QuadtoneRIP@yahoogroups.com <QuadtoneRIP%40yahoogroups.com>,
> Michael King <drmrking@...> wrote:
> >
> > Keith,
> >
> > go off and read this and then if you have further questions come back and
> > ask...
> >
> > http://www.diallophotography.com/pdfs/QTRworkflow.pdf
> >
> > <http://www.diallophotography.com/pdfs/QTRworkflow.pdf>Mike
> >
> > On 14 September 2010 21:49, Keith <kjrslr@...> wrote:
> >
> > >
> > >
> > > Thanks Mike. You are being VERY helpful.
> > > Still have questions.
> > > First.
> > > For the intial Calibration page I printed, I determined that max ink to
> be
> > > 73%. What should I have been looking for from my
> measurements(w/Spyder3Print
> > > spectro) Lab or density? In other words, which should I use and what
> change
> > > should I see, number wise? I think I used the numbers I got from
> density
> > > readout.
> > >
> > > Next, Since I determined 73 was the point, I put that into the slider
> and
> > > printed out a new Calibration page to get the limit for the LK which I
> > > determined was 25% of Blk.
> > > So the Calibration page(set at 73)was printed out I read the 100% patch
> for
> > > LK. The reading I got for Density was .88 and L was 42.96.
> > > I then measured Blk and found the 25% patch read Density at .88 and L
> was
> > > 42.81.
> > > Should I have printed out a 3rd Calbration page with the slider set to
> 25
> > > to detrmine the LLK as I did to get the LK?
> > > The reason I ask is that the existing curve I used had the LK at 22.8
> and
> > > LLK at 7.6 where as what I measured I got for LK was 25% but LLK was
> 31%,
> > > but I only printed out just the 2 calibration pages(the 1st and then
> 73%).
> > > Because the 31% seemed too high(compared the existing curve) I wondered
> if I
> > > should have printed a 3rd page for determining the % of LLK from LK. Do
> you
> > > follow my question?
> > >
> > > To answer your question as to which strip, I'm refering to the one
> printed
> > > out(following the instuctions you mention)after I put in the numbers
> from
> > > the Calibration page(which determine ink limits).
> > >
> > > You're answering a lot Mike, please keep it up!
> > >
> > > --- In QuadtoneRIP@yahoogroups.com <QuadtoneRIP%40yahoogroups.com><QuadtoneRIP%
> 40yahoogroups.com>,
>
> > > Michael King <drmrking@> wrote:
> > > >
> > > > Hi Keith,
> > > >
> > > > >>So correct me if I'm wrong. Are you saying that when I called up
> the
> > > > existing curve to modify, I should have removed the >>linearization
> > > first,
> > > >
> > > > Yes
> > > >
> > > > >>THEN added the numbers I got from the ink calibration into the
> Curve
> > > > Creator box, AND THEN print that(the >>21 step wedge)out?
> > > >
> > > > Yes
> > > >
> > > > >>Do I then measure this new strip and put those numbers in the
> > > > linearization boxes?
> > > >
> > > > Yes
> > > >
> > > > >>If the strip doesn't >>look good, what do I modify next?
> > > >
> > > > Which strip?
> > > >
> > > > So after the above, you effectively have a print path that prints
> linear
> > > L
> > > > vs RGB value.
> > > > Now the question is how are you going to map what you see on your
> monitor
> > > to
> > > > this print path?
> > > > Since you have a spectro and the final linerized target already
> printed,
> > > I
> > > > would suggest that you create an QTR RGB ICC profile and use that to
> soft
> > > > proof your images in photoshop - with preserve values checked. This
> gives
> > > > luminance and "colour" soft proof.
> > > >
> > > > Also you can use one of the ICCs in QuadToneRIP/icc to soft proof.
> This
> > > will
> > > > give you approx luminance.
> > > >
> > > > Mike
> > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>  
>


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