QTR-Quadtone RIP

Howard, thanks so much for the post. I'm starting to get the idea finally!

best,
Sarah






--- In QuadtoneRIP@yahoogroups.com, Howard Shaw <glassman@...> wrote:
>
> Sarah
> 
> The qtrgui help file says the following about the Ink Limit Adjustment 
> Slider:
> 
> "Ink Limit effects the darkness of the shadows. Reducing Ink Limit can 
> help unblock shadows"
> 
> I believe it controls the amount of black and possibly dark grey ink 
> that is put down. In theory, if your curves are good, then you shouldn't 
> need to use it but you might have certain images that might benefit from 
> either lighter or darker shadows (although I would prefer to adjust them 
> in Photoshop).
> 
> Another use is if you wish to use a curve that was designed for 1440dpi 
> resolution that you wish to use at 2880dpi. The latter puts down a lot 
> more ink so the slider can be reduced by a large amount to compensate.
> 
> You might also wish to try a paper that you don't have a curve for - you 
> could use a curve for another similar paper but alter this slider if you 
> find too much/too little ink is being put down. Evidence for too much 
> ink would include mottling in the dark areas, the print being wet or 
> reduction in dmax in the darkest areas. Evidence of too little ink would 
> be overall lightness of print or not achieving the dmax that you would 
> expect.
> 
> It's really one of those things you have to try out with a few test 
> prints to better understand what it does.
> 
> regards
> Howard
> 
> sagaface wrote:
> > I posted this on the B/W group and received no repsonse, though someone 
> > helpfully
> > directed me here. I hope this question doesn't seem too "first grade":
> > 
> > I use a 2200 with Mac OS X, using K2/Eboni with either BO or QTR (with 
> > which I am a
> > complete beginner). I've read a few threads where people mention using 
> > the ink limit
> > adjustment with certain papers...how do you know which papers benefit 
> > and by how much
> > to pull back or add? I use mostly EEM/HPR.
> > 
> > I guess what I'm saying is I don't really understand the tool. Is there 
> > someplace I can read
> > about it someone could direct me to? I have read Roy Harrington's .pdf 
> > for QTR and am
> > still unsure when or why to use this.
> > 
> > Thanks for any clarification someone might offer!
> > Sarah
> >
>