QTR-Quadtone RIP

I couldn't agree more.

In fact, after backing off my K ink limit, generating curves and  
linearizing, I haven't needed to "mess" with BOOST K or OVERLAP.

I am living quite happily with a very simple set of curves created  
with the most minimal set of options available and producing better  
prints than the efforts I have previously made using all of the  
whistles and bells to get the absolute darkest max density. I have  
found that I have usually ended up with unsatisfactory shadow  
gradation when I have tried too hard.

James




On Oct 15, 2007, at 1:41 PM, Paul Roark wrote:

> I think my experiences are consistent with the views of this thread.
>
> >> I had my default ink limit set fairly high initially,
> >> where the curve was getting very flat.
> >>... The 90, 95 and 100% tones were bunched up pretty close.
>
> Some set their dmax not to the point of absolute darkest, but to  
> that point
> where the curve becomes so flat the noise and variables might cause  
> future
> posterization.
>
> Usually the higher the load of an ink (more pigment particles  
> relative to
> base), the sooner it will reach the point where the curve's slope  
> is too low
> to be useful or reliable.
>
> The MK is the highest load ink. So, I use it for the default ink load.
> Usually you can then simply ignore the black boost and other ink  
> limits. I
> set this with a single 21-step curve printed with a straight line  
> curve
> profile. I make the curve by entering the coordinates (0, 0) and  
> (100, 100)
> in QTR's "Point List." (Tools>Curve Creation>Curve>Point List tab) In
> short, on 21-step print takes care of dmax and all ink limit (and  
> black
> boost) issues in making the profile.
>
> >... It is better to start with a more
> >conservative max density for building curves, and after you have
> >everything working right, then you can mess with BOOST K, OVERLAP,  
> etc.
>
> Among other things, I prefer to have a reasonable good curve going  
> into the
> linearization. With respect to the adjustments in the tabs between  
> the Ink
> Setup and Linearization tabs, I leave adjustments in their default
> positions. As one expert once commented about Gimp print in another
> context, it has lots of controls, but most of them are not worth  
> bothering
> with.
>
> Paul
> www.PaulRoark.com
>
>
>
> 



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