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Digital BW, The Print

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Re: [Digital BW] QTR question on curve creation

2005-04-12 by Daniel Staver

The ink limit step is probably the least important step of the whole 
process. You can create a good curve with a pretty wide range of values 
here, so just use an ink limit that avoids obviously blocked up shadows 
in the stepwedges and go on to the next step. On my 2100 I've made good 
curves with anything from 60 to 100 as the ink limit.

QTR also supports linearization with a scanner if you don't have a 
densitometer, but it won't be as accurate of course.

--
Daniel Staver
http://daniel.staver.no



Johnny Eades wrote:
> 
> I'm starting to learn about the curve creation process and am in the 
> ink density calibration stage. I've tried several ink limits to 
> determine it, but what I would like to have some insight on is whether 
> the percentages of the black output on the calibration mode at my 
> chosen ink limit percentage should have visible separation from 0% to 
> 100%; as it would be in a conventional 21 step stepwedge? I've narrowed 
> it down to printing calibration mode at 45% and I do have separation of 
> the black from 0% to 100%. Help at this stage will help me go on to the 
> next step of calculating the othere ink densities compared to the black 
> ink. I think I'll have access to a densitometer sometime this week and 
> can go on if these steps now have been determined correctly.
> 
> Your friend in Photography,
> 
> Johnny

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