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Re: emulating a stochastic screen - another question for joost

2009-11-24 by horstenj

David,

I use the Andromeda "screens" filter. I notice they changed their website at the expense of a decent explanation. This link:

http://www.andromeda.com/main/screengall_screens.php

gives some idea. I guess it's the same filter as your call "mezzotint". I use it to create an aquatint-like dithering, which is noticably different than a stochastic dithering. Given the same resolution the aquatint has a coarser, but more natural/artistic feel then a stochastic dithering.

If you want stochastic dithering indeed, there are several (free) photoshop plugins that do that.

Joost


--- In QuadtoneRIP@yahoogroups.com, "David" <dkfreed@...> wrote:
>
> Joost, which Andromeda filter did you use? Is it the mezzotint? I asked them about this, and they said a filter to do what I want is soon to be released, but not available right now. Maybe they don't understand what I want. 
> 
> Best, David. 
> 
> > 
> > --- In QuadtoneRIP@yahoogroups.com, "horstenj" <j.h.j.h@> wrote:
> > >
> > > Hi david,
> > > 
> > > I've made digital positives for photopolymer intaglio prints with QTR with good success.
> > > 
> > >I use andromeda screen filter for this. The result should be a black and white image (no gray tones). The dots are formed in Photoshop, not QTR. Any consideration with respect to percentage coverage of the dithering pattern is to be handled in photoshop, again not in QTR.
>

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