[pure-silver] Re: Negative Intensification
- From: "Ralph W. Lambrecht" <info@xxxxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Wed, 2 Dec 2009 23:48:09 +0100
Tim
Selenium is a proportional intensifier, meaning same percentage for
highlights and shadows. You may not want that, because it will
increase contrast by doing little (in absolute terms) on the shadows
and lots in the highlights. You probably would like a sub-proportional
intensifier, but unfortunately, the chemistry for that is quite toxic.
I think, Richard has posted the formula before, but I can look it up
if you are interested.
Regards
Ralph W. Lambrecht
http://www.darkroomagic.com
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On Dec 02, 2009, at 22:55, Tim Daneliuk wrote:
I have a negative that was exposed with strong backlighting and no
exposure
compensation was dialed in. So, the desired foreground is quite dark
as compared to the less important background.
I am contemplating trying to intensify the negative with KRST.
However,
there seem to be two schools of thought about this. One says that
selenium
only affects the highlights and thus would buy me nothing here. The
other
says that you get intensification of shadows as well.
Who's right and will this help fix my problem?
--
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Tim Daneliuk tundra@xxxxxxxxxxxxxx
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