QTR-Quadtone RIP

Joost,

I've been printing from a 15% dot gain profile. I converted to QTR Gray Lab and the print 
looks the same. Also, there is always going to be a bit of difference from what I see on 
screen, hence the need for soft proofing and making adjustments before printing, right? 
Also, I am using the stock QTR Velvet Fine Art profile for my Hahnemuhle Natural Art Duo 
Matte paper and have not made custom profiles. QTR allows for much more gradation of 
tone than the standard Epson driver and it seems that's why I seem to need to darken 
and/or up the contrast a bit to keep the look I want. Does this sound right?

Thanks again.

Davin Ellicson





--- In QuadtoneRIP@yahoogroups.com, "Joost Horsten" <j.h.j.h@...> wrote:
>
> Frankly, I'm a bit puzzled by what you try to tell us, I conclude 
> that QTR resolves your "green" issue but that the brightness/contrast 
> do not match your screen image. Right?
> 
> First question: did you read Tom Moore's user guide. Second question, 
> following that: did you convert your file to either Gray Lab or or 
> RRGB lab?. If not then most likely your file is in either AdobeRGB or 
> sRGB. This will give wrong results as QTR assumes an image in Lab 
> color space.
> 
> Joost
> 
> 
> --- In QuadtoneRIP@yahoogroups.com, "dellicson" <davinellicson@> 
> wrote:
> >
> > I have been using the QTR to get rid of the green color cast when 
> printing on my Epson 
> > R2400. I have making neutral prints and am no interested in toning 
> them. To that end, I have 
> > only been using the neutral curve. I am wondering why I normally 
> have to adjust levels by 
> > about 10-15 points in the negative and also use curves to increase 
> contrast to get my prints 
> > to look right, when with the Epson driver my prints are pretty 
> close matches to what I see on 
> > my calibrated seen (albeit with the green color cast). Should I be 
> mixing at least 2 curves, like 
> > 50 cold and 50 warm to get neutral instead?
> > 
> > Thank you.
> >
>