QTR-Quadtone RIP

Hi Paulo,


--- In QuadtoneRIP@yahoogroups.com, Paulo Baptista
<paulo.baptista@...> wrote:
>
> But, if I understand it correctly, if you use QTR-Gray Lab 
> as your working space in PS, when you open an image that has another 
> profile assigned to it, you will be prompted to either use the attached 
> profile or convert your images to the working space, which I think
does the 
> same job than opening your images in a "normal" working space (e.g.
GG 1.8) 
> and then converting them to QTR Gray Lab for editing, as you suggest.


Yes, I believe that is correct.


> I 
> believe the same applies to converting to gray-matte or gray-photo
profiles 
> prior to printing versus using these as printing spaces (in"Printing
with 
> Preview"). Am I right?
> Best regards,
> Paulo
> 

 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. It is my understanding
that the calibration that you do using QTR ends up linearising your
printer,inks and paper specifically for printing via QTR itself. You
are, in effect, controlling each jet of ink independently as opposed
to having the normal Epson print driver do it's own undocumented thing
with the jets. It is giving you full control over when,where and how
the different inks are distributed. There is a lot of power in that
approach. There can also be some learning required as to how best to
use that power.
Fortunately there are folks like Roy around to help us in doing that.

Regards
Duane