QTR-Quadtone RIP

Great explanation, thank you for that. I am not aware of the  
piezography site you are referring to, would you mind posting the  
link, please?

Jakub Vosahlo

On 16.1.2010, at 22:01, "ccolbertbw" <ccolbert@...> wrote:

>
>
> One other small point that you may already be aware of: be sure that  
> you are in fact laying down "black" values. Use the histogram tool  
> in PS (hold down the control key while you move the slider) to see  
> where the black pixels are. You may find that a vanishingly small  
> number of pixels are actually near 100%.
>
> Somewhere on the piezography site there is a nice tutorial showing  
> how to steepen the curve from about 90-100% to push more pixels into  
> the deep blacks. Perceptually it can make a big difference. Good luck.
> ccolbertbw
>
> --- In QuadtoneRIP@...m, "dawsonmpleasanton"  
> <dawsonm@...> wrote:
> >
> > Thank you for that information. It helps ease my mind somewhat.
> >
> > In fact, I am referring to "Ultra Premium Presentation Matte"  
> paper. It looks like you are getting a Dm of 1.57 on that paper. I  
> have H. Museum Etching as well. Haven't printed out a calibration  
> ramp on that paper yet.
> >
> > I find it interesting that the Epson paper loads up so quickly. It  
> reaches nearly 1.5 somewhere around 50% load and VERY gradually gets  
> to Dmax. Whereas it seems clear that the other papers are increasing  
> in density right up to 100% load. Well, maybe not that interesting.  
> It's why we need to profile the papers, afterall. Right?
> >
> > After doing a few more prints since my original post I think I  
> agree with you. The blacks aren't that bad on Epson matte. I think  
> it was my initial impression of my first print in going from the dye/ 
> pigment inks of my R1800 to pure pigment inks on matte.
> >
> > Plus the print I made was not really processed optimally and was  
> lacking in contrast. The result was a print that seemed a little  
> dull and life-less without any black punch. My subsequent prints  
> have looked pretty good.
> >
> > Thanks again.
> >
> > Mike
> >
> > --- In QuadtoneRIP@yahoogroups.com, "ccolbertbw" <ccolbert@> wrote:
> > >
> > >
>
> 


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