Digital BW, The Print

Apparently QTR can automatically linearize a curve using eye-one or a densitometer. I 
want to do this using a densitmeter but the instructions seem to only be for eye-one 
as far as I can decipher. So, can I in fact linearize with a densitometer and, if yes, then 
does anyone know how to enter the data so Calc-Density can do its work? Thanks in 
advance for any advice.
John Eckenrode

I think that Calc-Density is only necessary to calculate the density 
from the xyz values captured by the I1. If you have a densitometer 
you just have to measure the densities of all steps and enter these 
values into the curve file (e.g. LINEARIZE="0.036 0.137 0.260 0.382 
0.505 0.616 0.744 0.858 0.963 1.054 1.133 1.213 1.287 1.357 1.418 
1.467 1.519 1.559 1.587 1.627 1.666 ").

Hope that's right.
Peter

peter baumbach - fine art photography
http://www.pb-photo.com

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "ejohn182002" 
<ejohn182002@y...> wrote:
> Apparently QTR can automatically linearize a curve using eye-one or 
a densitometer. I 
> want to do this using a densitmeter but the instructions seem to 
only be for eye-one 
> as far as I can decipher. So, can I in fact linearize with a 
densitometer and, if yes, then 
> does anyone know how to enter the data so Calc-Density can do its 
work? Thanks in 
> advance for any advice.
> John Eckenrode

Thanks, Peter, that's correct.  You can use anything that measures
density -- the calc-density script is just a simple way to use the i1
output.

Roy

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Peter Baumbach" <
info@p...> wrote:

> I think that Calc-Density is only necessary to calculate the density 
> from the xyz values captured by the I1. If you have a densitometer 
> you just have to measure the densities of all steps and enter these 
> values into the curve file (e.g. LINEARIZE="0.036 0.137 0.260 0.382 
> 0.505 0.616 0.744 0.858 0.963 1.054 1.133 1.213 1.287 1.357 1.418 
> 1.467 1.519 1.559 1.587 1.627 1.666 ").
> 
> Hope that's right.
> Peter
> 
> peter baumbach - fine art photography
> http://www.pb-photo.com
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "ejohn182002" 
> <ejohn182002@y...> wrote:
> > Apparently QTR can automatically linearize a curve using eye-one or 
> a densitometer. I 
> > want to do this using a densitmeter but the instructions seem to 
> only be for eye-one 
> > as far as I can decipher. So, can I in fact linearize with a 
> densitometer and, if yes, then 
> > does anyone know how to enter the data so Calc-Density can do its 
> work? Thanks in 
> > advance for any advice.
> > John Eckenrode

Peter, Roy

Thanks, that makes things easy. Thanks for your input.
Actually here's another side question for Roy. Is it
difficult to put a graphic interface on something like
QTR? This is a naive question, I honestly have no clue
about these things. Last night I just thought that
would be nice for people like me, a graphic designer
by trade, that function better when pretty pictures
are involved. In reality QTR is pretty easy to figure
out as is, I was just mildly curious. Again thanks for
all your work on this Roy.

John

--- Roy Harrington <roy@...> wrote:
> 
> Thanks, Peter, that's correct.  You can use anything
> that measures
> density -- the calc-density script is just a simple
> way to use the i1
> output.
> 
> Roy
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com,
> "Peter Baumbach" <
> info@p...> wrote:
> > I think that Calc-Density is only necessary to
> calculate the density 
> > from the xyz values captured by the I1. If you
> have a densitometer 
> > you just have to measure the densities of all
> steps and enter these 
> > values into the curve file (e.g. LINEARIZE="0.036
> 0.137 0.260 0.382 
> > 0.505 0.616 0.744 0.858 0.963 1.054 1.133 1.213
> 1.287 1.357 1.418 
> > 1.467 1.519 1.559 1.587 1.627 1.666 ").
> > 
> > Hope that's right.
> > Peter
> > 
> > peter baumbach - fine art photography
> > http://www.pb-photo.com
> > 
> > --- In
> DigitalBlackandWhiteThePrint@yahoogroups.com,
> "ejohn182002" 
> > <ejohn182002@y...> wrote:
> > > Apparently QTR can automatically linearize a
> curve using eye-one or 
> > a densitometer. I 
> > > want to do this using a densitmeter but the
> instructions seem to 
> > only be for eye-one 
> > > as far as I can decipher. So, can I in fact
> linearize with a 
> > densitometer and, if yes, then 
> > > does anyone know how to enter the data so
> Calc-Density can do its 
> > work? Thanks in 
> > > advance for any advice.
> > > John Eckenrode
> 
> 


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--- In DigitalBlackandWhiteThePrint@yahoogroups.com, john 
eckenrode <ejohn182002@y...> wrote:
> Peter, Roy
> 
> Thanks, that makes things easy. Thanks for your input.
> Actually here's another side question for Roy. Is it
> difficult to put a graphic interface on something like
> QTR? 

It's certainly possible, and I may get around to it someday.
But for now I don't have the time to figure that part out.

Roy

This is a naive question, I honestly have no clue

> about these things. Last night I just thought that
> would be nice for people like me, a graphic designer
> by trade, that function better when pretty pictures
> are involved. In reality QTR is pretty easy to figure
> out as is, I was just mildly curious. Again thanks for
> all your work on this Roy.
> 
> John
> 
> --- Roy Harrington <roy@h...> wrote:
> > 
> > Thanks, Peter, that's correct.  You can use anything
> > that measures
> > density -- the calc-density script is just a simple
> > way to use the i1
> > output.
> > 
> > Roy
> > 
> > --- In DigitalBlackandWhiteThePrint@yahoogroups.com,
> > "Peter Baumbach" <
> > info@p...> wrote:
> > > I think that Calc-Density is only necessary to
> > calculate the density 
> > > from the xyz values captured by the I1. If you
> > have a densitometer 
> > > you just have to measure the densities of all
> > steps and enter these 
> > > values into the curve file (e.g. LINEARIZE="0.036
> > 0.137 0.260 0.382 
> > > 0.505 0.616 0.744 0.858 0.963 1.054 1.133 1.213
> > 1.287 1.357 1.418 
> > > 1.467 1.519 1.559 1.587 1.627 1.666 ").
> > > 
> > > Hope that's right.
> > > Peter
> > > 
> > > peter baumbach - fine art photography
> > > http://www.pb-photo.com
> > > 
> > > --- In
> > DigitalBlackandWhiteThePrint@yahoogroups.com,
> > "ejohn182002" 
> > > <ejohn182002@y...> wrote:
> > > > Apparently QTR can automatically linearize a
> > curve using eye-one or 
> > > a densitometer. I 
> > > > want to do this using a densitmeter but the
> > instructions seem to 
> > > only be for eye-one 
> > > > as far as I can decipher. So, can I in fact
> > linearize with a 
> > > densitometer and, if yes, then 
> > > > does anyone know how to enter the data so
> > Calc-Density can do its 
> > > work? Thanks in 
> > > > advance for any advice.
> > > > John Eckenrode
> > 
> > 
> 
> 
> __________________________________
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> The New Yahoo! Shopping - with improved product search
> http://shopping.yahoo.com

Hi again Roy

Have you started using GIMP 4.3 yet? I'm using 4.2.5
and was wondering if the upgrade was worthwile.
Thanks.

John Eckenrode

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