Digital BW, The Print

I'm no expert on this for sure but I assume the adjustable ink limit
feature on the newer version of QTR is created to work this system
through the variation that occurs from printer to printer, sort of a
custom ink load adjustment. I've never had to use it yet. I would also
assume that the darkest inks would be affected more and first.

John

 
> All
> 
> My original experience was that I could get only a
> DMax of 1.41 on Photo Rag 308 using the curves
> supplied with QTR.
> 
> I then went to the curve creation tool and simply
> bumped the total ink limit from 75 to 80. If I
> understand correctly, all seven inks are equally
> affected by this control.
> 
> I now have a dmax of 1.62 with PR 308 and the richness
> of the  deep blacks are much enhanced and the overall
> tonality is still great. Is there any problem you know
> of with what I have done? If so, any other ideas of
> how to get better dmax without simply lifting the
> overall ink limit?
> 
> Thanks for any help
> Woody Spedden
> 
> --- john dean <deanwork2003@y...> wrote:
> 
> 
> ---------------------------------
> I've been thinking over these same issues. Carl I have
> always liked
> the damx of Carbon Sepia with the museum black from a
> good scan. Would
> you say there is a noticeable difference between the
> earlier inksets
> and K7 in the black content? Shouldn't a good
> linearization take care
> of that. Your set up sounds ideal and makes we wonder
> if I should have
> a 7600 just to do what you are doing with the warm and
> neutral.
> 
> Also from past experience, I belive the max black
> position contributes
>  to the final color tone of the entire set doesn't it?
> If you put
> Ebony in there aren't you going to destroy the
> neutrality this set
> represents in the first place and push it toward
> cooler tones? 
> 
> What I would like to do is put Ebony in with the Lyson
> Cave Paint
> color pig inkset in my 10K next week when I set that
> up. Lyson has
> offered to create a matte black for some of us who
> insist upon it in
> order to use that set but it isn't a known quantity
> like Ebony is. Any
> of these combinations have to be linearized to work
> right.
> 
> John
> 
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com,
> Carl Schofield
> <scho@m...> wrote:
> >
> > The k7 black does not have an outstanding dmax, but
> I don't find that  
> > it detracts from image quality.  Some values I've
> measured with the  
> > 4000 are:   Hahnemuhle Photo Rag Bright White 1.63,
> Hahnemuhle White  
> > Velvet 1.61, and Hahnemuhle Photo Rag 1.63.  No
> reason you can't use  
> > Portfolio K or any other black ink.  Currently, I'm
> using the k7  
> > black as a "shared" black ink for the neutral and
> carbon sepia quads   
> > in my 4000.  However, I have an unused slot (PK)
> that I could (and  
> > probably will) use for a second black ink.
> > 
> > Carl
> > 
> > On Oct 7, 2005, at 6:37 AM, Ben Ong wrote:
> > 
> > > Re: Piezography Neutral K7 printing
> > >
> > > Hello Carl,
> > >
> > > thanks for the response. So you are using the K7's
> Black in your  
> > > set up; are
> > > you happy with the Dmax you are achieving? I'm
> getting the claimed  
> > > 1.62 Dmax
> > > by Cone with K7 on Photorag, but also achieve 1.7
> to 1.74 on  
> > > Photorag with
> > > Piezotone Selenium + Portfolio Black + StudioPrint
> 11. There is a very
> > > noticeable difference to the eye in these two
> measurements to me,  
> > > but seems
> > > like people are generally happy with the product
> out there???
> > >
> > > I am being a bit hard on the product I guess. I
> shoot 35mm so I'm  
> > > probably
> > > not the right candidate to notice a significant
> increase in  
> > > smoothness or
> > > subtle tonal range increases.
> > >
> > > Still I think it would have been nice to at least
> offer a Portfolio  
> > > Black
> > > option to those who want it. They did with
> Piezotones so why not  
> > > with NK7???
> > >
> > > Thanks again. Benny.
> > >
> > >
> > >    Date: Thu, 6 Oct 2005 10:38:00 -0400
> > >    From: Carl Schofield <scho@m...>
> > > Subject: Re: Digest Number 3456
> > >
> > > I also think that 7 grays are probably not
> necessary for most
> > > applications and any smoothness gains would be
> hard to detect on fine
> > > art papers.  I'm using 4 of the neutral k7 grays
> (including the
> > > black) and the carbon sepia inks in a dual quad
> setup on my 4000,
> > > driven by QTR.  I'm very pleased with the prints
> from both inksets.
> > 
> > 
> > 
> > [Non-text portions of this message have been
> removed]
> >
> 
> 
> 
> 
> 
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