QTR-Quadtone RIP

Once again, Thank you Mike and the rest that have helped me along. After gaining some in-site and clarifying a few things, I finally created a curve that, when printed through QTR, yielded a print that pretty much matched what I had on the screen. I feel like I passed a major test. Now I have to apply it to a few images.
Anyone know about creating multiple curves for split toning.....?

--- In QuadtoneRIP@yahoogroups.com, Michael King <drmrking@...> wrote:
>
> On 15 September 2010 17:04, Keith <kjrslr@...> wrote:
> 
> >
> >
> > Once again Mike, thank you for your patience!
> > With the info that you you provided, I went back and remeasured the Cal
> > page and determined that a new value was needed and printed out a new 2nd
> > page and measured that. Much quicker this time around!
> > But going back to the profile folder, I realised that the curves I was
> > using(as a basis for modifing)are for matte papers using MK inks. I'm using
> > PK on photo type papers(Innova Fiba Print Semi Matte). So my question once
> > again is about the profiles. Other than the .qidf files(which are all listed
> > for matte(MK) papers the other files are .amp and .raw. Do you know what
> > those are for?
> >
> No idea what they are for.
> 
> Yes they aren't any PK profiles for 4800 by the looks of it.
> 
> So you either;
> a) ask if anyone else has one you can start from..
> b) take one from another printer as a starting point but you need the same
> ink channel mapping
> c) start with MK one and change MK for PK curve.
> 
> I honestly don't know much more about this as I'm a B&W inkset MK only
> printer.
> Haven't studied what's need to create colour curves.
> 
> Good luck,
> 
> Mike
> 
> > Again from the workflow you provided:
> > "Two sets are provided; one for matte papers and one for glossy media. Each
> > set contains four tints: cool, neutral, warm
> > and sepia. Begin with the neutral curve. Later you will create a separate
> > custom curve for each remaining tint.
> > *If your printer model contains no raw curves, choose a neutral curve for
> > an existing paper that is similar in characteristics
> > to the paper you wish to calibrate, taking care that the appropriate ink
> > type (pk or mk) is chosen."
> >
> > I do not see two types, only matte. I'm assuming that(in the folder)coolse
> > is the neutral curve. All of the curves listed with TC-***.amp(or.raw) are
> > listed twice, one with PS(in the icon) and one without.
> > All I'm trying to figure out which curve I should start with to modify.
> >
> > --- In QuadtoneRIP@yahoogroups.com <QuadtoneRIP%40yahoogroups.com>,
> > Michael King <drmrking@> wrote:
> > >
> > > > 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><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><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
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > >
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> > > > >
> > > >
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> > > >
> > >
> > >
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> >  
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