QTR-Quadtone RIP

Thanks Roy.  The PWP softproof works as a "PCN=off" transformation 
with a selected rendering intent -- this is what I use.  There is 
also a PWP transformation "Convert" that works as a PCN=on 
transformation with a selected rendering intent applied after the 
image is edited.  Moreover, there is also a PWP printing option that 
nondestructively applies the printing profile (in my case same as 
softproof profile) to the image data with a selected rendering intent 
as it is fed to the printer through the Epson driver.  I could use 
this approach, but I print the saved tiff files through QTRgui.

What I was (and still am) confused about is the discussion 
surrounding all the color space conversions and generic QTR icc 
conversions discussed by Joost etal.  


--- In QuadtoneRIP@yahoogroups.com, Roy Harrington <roy@...> wrote:
>
> Hi Jeff,
> 
> Since I don't have or use Picture Window Pro I don't know details 
of 
> that product.
> But from the PS point of view there are two ways to view/use 
> soft-proofs and
> it's worthwhile understanding how they work.
> 
> With PS there is an option in the Proof Setup called "Preserve 
Color 
> Numbers".
> This allows proofing to simulate the print as if you will print 
with 
> that same profile
> or print without a profile.  PCN=ON means you'll print without the 
> profile -- the idea being
> you will keep the existing "numbers" in the file NOT convert them 
to 
> the print profile.
> PCN=OFF means you'll print with the profile -- i.e. the "numbers" 
will 
> be converted
> from the embedded profile to the print profile -- this is the most 
> common usage.
> 
> However, back to QTR:   because we're saving a tiff and printing in 
a 
> separate program
> the Convert-to-profile can be a hassle or maybe not possible.  I 
don't 
> know PWP.
> Because of this it may be advantageous for you to use the PCN=ON or 
> simulate
> the no print profile on your screen.  Now you are editing just as 
it 
> will appear on the
> print.
> 
> So whether you are effectively doing all this or you are lucky 
largely 
> doesn't matter.
> This illustrates my "figure out what works best for you" approach.
> 
> Roy
> 
> On Thursday, March 8, 2007, at 02:53  PM, Jeff Randall wrote:
> 
> > Roy.  What does it boil down to for Window users who print through
> > QTRgui?
> >
> > I edit my images with softproof turned on using the profiles I 
created
> > using QTR-Create-ICC-RGB and my calibrated monitor.  I save the 
final
> > as a tiff and print through QTRgui applying the .QUAD file used to
> > create the softproof profile.  I don't convert or tag my grayscale
> > with any profile.  I edit with Picture Window Pro.
> >
> > I get good matches between monitor and print (as good as can be
> > expected between luminious monitor pixels and reflected light 
from the
> > prints).  Have I been lucky or am I just not discerning? Am I 
missing
> > something?
> >
> > --- In QuadtoneRIP@yahoogroups.com, Roy Harrington <roy@> wrote:
> >
> >> It really just boils down to:   edit in grayscale with your 
favorite
> >> method
> >> then apply i.e. convert to the best print profile you have before
> >> printing.
> >> The best is either the generic QTR Matte/Photo Paper profile
> >> or your own custom profile.
> >>
> >
> >
> -
> Roy Harrington
> roy@...
> Black & White Photo Gallery
> http://www.harrington.com
>