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Digital BW, The Print

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Re: QTR profile creation tutorial

2005-02-15 by Johnny Eades

Hello Daniel,

I downloaded your QTR curve tutorial---and am completely lost in 
understanding it. I created the calibration curves and printed them 
at 10%, 85% 70% ink limits and still can't tell the maximum ink level 
to use to get the correct separation between the darkest end of the 
Black,Cyan, and Magenta to plug into the curve creation process. I 
cobbled up something just to see some type of results, and I get the 
darkest sepia image as the result. I think I need to learn all the 
terminology before jumpimg into this printer profile business. I'm 
not going to give up because when I do finally get proper results, 
I'll be a better man for it; having developed much more patience.

Still your frustrated friend in Photography,

Johnny

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Daniel Staver 
<daniel@p...> wrote:
> Hi,
> 
> Tom Moore has written a really good introduction and tutorial on 
how to 
> create curves for QuadToneRIP.
> 
> I see the tutorial didn't make it into this release, so I've made 
it 
> available here:
> http://download.petraflux.com/qtrtutorial.zip (367kb)
> 
> The tutorial is not really finished yet, and it's not updated to 
reflect 
> the latest changes that was made to the interface in QTRgui. At the 
time 
> of writing you still had to edit the ink descriptor files directly, 
but 
> it should give you a good idea of how the various parameters 
interact 
> with each other.
> 
> I encourage you to give your feedback on the tutorial and 
documentation 
> in general so we can the neccessary improvements to make this more 
easy 
> to understand for everyone.
> 
> --
> Daniel Staver
> http://daniel.staver.no
> 
> 
> Johnny Eades wrote:
> > 
> > Hello all,
> > 
> > It was with great excitement that I say a message from Roy that 
the 
> > profile creation ability was now available for WinXP users. I 
> > downloaded the latest version of QTR/QTRGui and dove right into 
the 
> > process, but found that I had jumped into water deeper than I had 
> > ever been before. Knowing nothing about printer profiling, I was 
lost 
> > at sea at this point. I have printed out the calibration image 
and 
> > scanned it into Photoshop. Having done this I can read each 
square 
> > and get a resulting number. My question now is how do I relate 
that 
> > number to any of those in the curve creation panels. 
> > HHHHEEEEELLLLLPPPPP!!!!!
> > 
> > Your befuddled friend in Photography,

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