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Digital BW, The Print

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LAB Readings for Silver Prints

2005-01-18 by ldina

I was hoping an accomplished, active wet darkroom person could 
provide some information.  I want to create some B&W profiles based 
on LAB spectrophotometer readings of neutral, selenium, sepia, 
platimun and warm silver prints.  Ideally, one would take a gorgeous 
print, then make a second print of a 21 or 26 step grayscale using 
the exact same exposure, processing etc.  (Or, take LAB readings at 4 
or 5 points in the print, approximating zones 1, 3, 5, 7, 8).

Armed with this information, it would be possible to approximate the 
coloration from shadows to highlights in a good profile for IJC/OPM 
or QTR.  Perhaps someone has even done something like this already.

I know the coloration is subjective and based on the preferences of 
the photographer, but I thought it might be a useful starting point.

Can anyone help, or does someone have data they have already 
accumulated that they can share?

If this happens and I manage to create great profiles from the data, 
I would be happy to share what I come up with.

Thanks, Lou

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