Re: Metamerism vs Color Constancy
Re: Metamerism vs Color Constancy
- Subject: Re: Metamerism vs Color Constancy
- From: bruce fraser <email@hidden>
- Date: Wed, 21 Sep 2005 07:29:23 -0700
I did say that. I should have qualified it by adding "illuminant"
because there's also observer metamerism-our eyes see one color, film
sees another-and geometric metamerism which we needn't go into here.
There's no contradiction between that definition and pointing out
that all color matches based on primaries are metameric. Some
metameric matches are simply more fragile than others. If we have a
color match, and we don't have exactly the same spectra (which we
basically never do), it's a metameric match.
At 12:40 PM +0100 9/21/05, Bob Frost wrote:
Bruce,
Who said this then?
"Metamerism is the phenomenon by which two color samples appear to
match under one light source but differ under another."
http://www.creativepro.com/story/feature/13036-3.html
Bob Frost.
----- Original Message ----- From: "bruce fraser" <email@hidden>
Inkjet prints are metameric. Press sheets are metameric. Any
attempt to reproduce a full range of color using only primaries (or
primaries plus K) relies on metamerism. All the color matches we
make are metameric.
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