QTR-Quadtone RIP

Duane,
thanks again. Sorry for the delay in answering, as I've been away from the 
studio for a few days.
I apologize if I didn't make myself clear on my first posts; I didn't mean 
to use the Epson driver instead of QTR. I was just saying that I didn't see 
(in theory, at least) any differences between converting an image to 
QTRgraymatte.icc or QTRgrayphoto.icc before going to Print with Preview or 
just selecting one of these profiles as Print Space on the Print with 
Preview options (since we'd be using Photoshop convertion algorithms on 
both situations), and then printing it using QTR.
Come to think of it, I work on a Macintosh, and QTR is integrated in the 
MacOS printing workflow as just another printer driver. I believe that if 
you happen to work on Windows you have to save the image as a .tif file and 
then open it in QTR, in which case it would be necessary to convert it to 
the desired profile, and Photoshop's Print with Preview options wouldn''t 
be used at all. Maybe that's the source of the confusion?
Regards,
Paulo


At 22:31 12/2/2006, you wrote:
>Paulo.
>With some thought on this, it occured to me that you are correct but
>only under the circumstance that you were to use Roy's Create-ICC
>program to make special profiles using the epson driver. That would
>mean that you would need to make your own curves for each ink set and
>paper and so on. Or use the profiles from someone else with the same
>printer,inks and paper. You might look at Paul Roark's web site for
>information on that process.
>  I think it would only be by chance that you could use one of the
>generic profiles such as Graymatt.icc directly with the Epson driver
>and get acceptable prints. You can test this easily when you finish
>calibrating QTR for one setup with your machine and ink and paper. If
>you print the edited image both ways I believe you will see the
>difference immediately.
>  I know that it does not work that way with my setup as I am using a
>variable tone inkset, and printing from the Epson driver via print
>preview or by directly converting to the graymaatt.icc would give only
>a single tone and will not be linearised the same way as QTR was
>calibrated.
>
>Regards
>Duane
>
>
>--- In QuadtoneRIP@yahoogroups.com, Paulo Baptista
><paulo.baptista@...> wrote:
> >
> > Hi Duane,
> >
> > >  I think that they amount to the same actions although I don't know
> > >that printing via the Epson driver using the matt.icc or photo.icc in
> > >print preview would give the same result as would using QTR to do the
> > >printing after converting to one or the other.
> >
>
>
> > I believe that when we select a print space in "Print with Preview"
>we're
> > still in Photoshop (and therefore not yet using the printer's
>driver), and
> > PS will then convert the file to the selected profile before sending
>it to
> > the printer's driver (Epson or QTR/Gimp, in that case),  which (I
>think)
> > amounts to the same effect than converting the image before going to
>"Print
> > with Preview". So I think we can safely use the Print with Preview
>feature
> > and still benefit from QTR's capabilities.
> >
>
> > Regards,
> > Paulo
> >
>
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>Yahoo! Groups Links
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