Re: Digital Camera Profiling...Why can't we all just get along?
Re: Digital Camera Profiling...Why can't we all just get along?
- Subject: Re: Digital Camera Profiling...Why can't we all just get along?
- From: Roger Breton <email@hidden>
- Date: Wed, 23 Apr 2003 09:23:27 -0400
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One of the issues I found when trying to create digital camera profiles for
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a customer doing fine art reproductions was I could create a profile that
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would faithfully photograph and reproduce the target (MacBeth) but the
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paintings were all over the place. I decided this was due to the pigments in
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the ink were different than the pigments in the target charts. The different
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pigments reacted differently to the light, even though we polarized the
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light to eliminate reflections. I found the same true with objects, a
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similar hue of red plastic would be different than red fabric or red metal.
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This was true with several different software's and several cameras.
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Although a good profile improved results some color adjustments was required
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on every image.
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The ideal digital photography technique for fine art reproduction is
"multi-spectral imaging". For the moment, these are only lab-type digital
cameras fitted with a filter wheel of six or seven color filters that are
used in the field by a limited few. A picture is taken through each filter
and later recombined in the computer. That's the technique being used at the
London Art Gallery and more and more around the world. Even though constant
progress is being made in this field -- there was a whole symposium on
multi-spectral imaging at RIT this spring -- it's going to take a while
before the Kodak, Canons and Nikons of this world bring to market a digital
camera employing this technique.
But it sure is the way to the future. Well beyond ICC and any camera
profiling scheme...
Roger Breton
Laval, Canada
email@hidden
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