Re: white point of camera profile?
Re: white point of camera profile?
- Subject: Re: white point of camera profile?
- From: Roger Breton <email@hidden>
- Date: Wed, 02 Jul 2003 08:30:16 -0400
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Let me explain what my problem is with my fine art repro business.
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1. All my pigment based prints from my Epson 9500 and 10600 are all viewed
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under Halogen lights 2856K. Because of the pigment inks, there is a what I
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consider a huge metamerism problem. View my prints on canvas under tungsten
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then take them outside for instance.. Hello.. What happened??? So this is
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where my delima is.
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I shot 95% of all my art with cross polarized HMI lights 4800K, make a
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camera profile for every setup and then I have been using PM 4.1.5 with the
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"A" 2856K white source setting which helps. I wish I could shot all my art
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with Tungsten lights, but I can't get enough light of of tungstens when I
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cross polarize.
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So I am dealing with all differnet light sources and I ma not sure what the
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best way to deal with this.
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Steven Kornreich
Here is my take on this.
The fact that you get an acceptable match under illuminant A and not under
daylight is completely inline with the theory: remember that the ICC is
based on 'colorimetric matching', meaning that the color matches under
*ONE* illuminant only. If you'd want to have a match on *ANY* illuminant
you'd be using 'spectral matching'. What you want is a system like the
London Art Gallery designed my the Munsell Color Science Laboratory, a
multi-spectral digital photography system. Look for any articles by Roy
Berns on google. But I don't believe they've made it into a commercial
system yet.
Have you every tried taking shots under tungsten lighting even though you
say that the tungsten lights you have are not rated high enough? Just to see
if that gives you better matching?
Roger Breton | Laval, Canada | email@hidden
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