[pure-silver] Re: Contrast Index
- From: "Ralph W. Lambrecht" <info@xxxxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sat, 5 Dec 2009 13:52:18 +0100
I love Kodak:
http://motion.kodak.com/motion/uploadedFiles/US_plugins_acrobat_en_motion_education_sensitometry_workbook.pdf
See if this makes sense to you. You find this explained in numerous
books, dealing with photographic sensitometry. However, as Richard
says, CI is a Kodak term. Ilford uses their implementaion of the
average gradient method. All are slightly different but roughly
comparable in trend.
Regards
Ralph W. Lambrecht
http://www.darkroomagic.com
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On Dec 05, 2009, at 03:36, Elias Roustom wrote:
In layman's terms please: The CI or Contrast Index that is listed on
the film developing charts I'm starting to read (heaven help us)
means what?
Is it measured from 0 to 1? 1 being a lot of contrast, 0 being very
little?
Most of Kodak's films in shot .56 or so alongside their recommended
development times. Is this an indication of whether this development
is intended for diffused or condensed light?
A lot for a Friday night...
Thanks,
Elias
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