QTR-Quadtone RIP

Thanks Walker, big help. I'm still trying to find how to make curves from scratch here.. giving it five minutes every 2 years just ain't cuttin' it...
Tyler

--- In QuadtoneRIP@yahoogroups.com, Walker Blackwell <forums@...> wrote:
>
> I've generally gone off of Roy's curves using them as standards (they  
> are very similar to each-other from printer to printer) (Warm/Cool/ 
> Cool-Sepia/Sepia)  But then I've created Warm-Sepia and Neutral.  
> Neutral is never that perfect, however, so I've always had to tone  
> with either cool or warm (or both) to get the print looking good. So  
> when I build QTR color curves I also like to create  
> custom.presets.plist files—for OS X—(and of course Create ICC  
> profiles) to go along with them. Because all the paper bases are so  
> different I think it would be pretty hard to create specific LaB  
> standards, but my goals have always been a visual approximation of  
> either Roy's QTR AB values or Jon Cone's Neutral/WN/SL AB values.
> 
> Walker
> 
> 
> On Feb 9, 2010, at 12:31 PM, tboleyyh wrote:
> 
> > Obviously there are some established conventions for making curve  
> > sets and providing them to the community- Warm, sepia, etc etc...  
> > and it's easy to see what inks were used to make each of these.
> > I'm wondering if there have been any loose targets set to try to hit  
> > with each one, to keep consistency amongst the available curves from  
> > printer model to printer model...
> > Anyone know, or is it purely approximate, visual..?
> > I'd like to design some that suit my needs, and then make them  
> > available if successful, and they might as will meet the established  
> > conventions so they are most useful to other users.
> > Thanks,
> > Tyler
> >
> 
> 
> 
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