QTR-Quadtone RIP

I also am struggling with the same issue  of what to do with GG 2.2 or Graylab ...  And how to use it. 

When I started out I was advised scan in untagged gray, only assign profiles, and edit in 16bit.  Never convert. This way you do as little damage as possible to the original numbers when circumstances dictate a change in profile.  The caveat was this would mean more work & time as you would have to readjust curves each time you change the profile. Have I got this right?

I am trying to understand what is happening with each setting. I am a bit confused when I look at Carl's question. Carl says:
> When I use the Photoshop print function I choose Gray-Matte-Paper.icc as my generic working profile.<

What confuses me is I thought the working profile is assigned in the color preferences settings Ps-cs3, and it is a default profile which Ps uses if you do not assign or convert to a profile. And Gray Matte is not intended as a working profile?? Is it an option Here??

In the Ps Print dialogue box you assign a Printer Profile, and I have been sitting here all morning trying to visualize what is happening when I set the Printer Profile. Is it just adjusting ink flow or is it a calibration curve. Or is it adjusting the flow in each of the nozzles?? 

Right now I have found that I get pretty good prints with either Gama 2.2 or QTR_Graylab checked here  .. If I go to the recommend QTR_Gray_Matte or QTR_Gray_photo I am getting too much ink with photo and even more with Matt. On a Hanamuhle Photorag.

I thought the profile for the printer was assigned in the curve in the QTR print page??

Anyway  ... I know this is a little more then Carl's question ... but I too am trying to figure out which profile to use and how to use it. Any help is appreciated.

michael
Using mac pro/ os10.5.7 / cs3 / epson 7600 / Cone k7 / Assign Gamma 2.2 / Printer Profile QTR Gray Lab/ Curve HanPhotorag







--- In QuadtoneRIP@yahoogroups.com, "csandersoc" <csocolow@...> wrote:
>
> Amadou/Roy,
> 
> I note in Amadou's Level 1 workflow that you convert to grayscale Gray Gamma 2.2. In the past I had downloaded gray-lab.icc and rgb-lab.icc profiles along with some paper specific .icc profiles. After I scan a negative I convert to gray-lab.icc. When I use the Photoshop print function I choose Gray-Matte-Paper.icc as my generic working profile. I understand that once I get to the point of creating paper/ink specific icc profiles that I can then use them here but for the time being they're working well with my workflow with paper-specific QTR curves. So, my question is is it preferable or desirable to use Gray Gamma 2.2 over the gray-lab.icc profile? Also, I no longer seem to be able to find the various gray and rgb-lab profiles via the website. Am I missing them somewhere else? Thank you both: Roy for a great piece of software and Amadou for helping me make sense of it.
> 
> Carl Socolow
> 
> 
> --- In QuadtoneRIP@yahoogroups.com, amadou diallo <amadiallo@> wrote:
> >
> > Super. Thank you, Roy.
> > 
> > On Tue, Jul 21, 2009 at 1:34 PM, Roy Harrington <roy@> wrote:
> > 
> > >
> > >
> > > Thanks, Amadou, for this excellent write up on QTR workflow. I've
> > > added links to
> > > both the PDF and the blog on the QTR website. This is a Mac oriented
> > > description
> > > but I'd recommend it for both Mac and Windows users who want more
> > > understanding
> > > of QTR workings from beginner to advanced features.
> > >
> > > Thanks again,
> > > Roy
> > >
> > >
> > > On Tue, Jul 21, 2009 at 8:34 AM, Amadou Diallo<amadiallo@<amadiallo%40gmail.com>>
> > > wrote:
> > > > I wrote up a pdf QTR tutorial that hopefully makes things clear for both
> > > simpler uses (canned curves) and more advanced setups. The tutorial is based
> > > on an UC K3 setup on a 3800, but the concepts apply to other quad
> > > configurations.
> > > > The link is on my blog at
> > > > <blogfiftygreatestphotos.com/2009/07/21/quadtone-rip-workflow>
> > > >
> > > >
> > >
> > >  
> > >
> > 
> > 
> > 
> > -- 
> > amadou diallo
> > www.blogfiftygreatestphotos.com
> > 
> > 
> > [Non-text portions of this message have been removed]
> >
>