Re: Metamerism
Re: Metamerism
- Subject: Re: Metamerism
- From: Rudy Vonk <email@hidden>
- Date: Mon, 29 Oct 2001 10:42:32 +0100
Bruce Fraser wrote:
>
When the subject of color appearance shifting with the Epson pigs
>
under different light sources came up, I immediately thought of it as
>
a metamerism issue, but some folks were uncomfortable with using the
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term 'metamerism' since we were discussing one sample -- a single
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inkjet print.
"Haplometamerism", perhaps? :-) (I am reminded of Woody Allen playing a
friendly poker game in one of his movies and proclaiming to have "five semipairs"...)
>
One fudge for this is to treat the desired appearance on screen as
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one sample, and the print under the lighting that "works" as another.
>
Then you have a classic case of metamerism, as defined above.
With the greatest of respect, I would beg to differ. Even if you call
these objetcs the "two samples" from the definition, we are definitely
not viewing them under "one light source".
On the semantic principle, I agree with Bob Binder:
>
C. David may be correct, but I fear if we allow this to happen, we risk
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diluting the original and correct meaning of the term. Maybe this is
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advancement, but in my opinion, it is not.
When two phenomena are not the same, we cannot meaningfully discuss them
by giving them the same name.
I think most of us would be astonished if we found one sample (e.g. a
print) looking the same under five diferent light sources. So what we
are worried about in the case of the Epson prints is the *degree* of
something which we otherwise accept as perfectly understandable. Rather
than applying the term we are looking for (or my "haplometamerism") to a
single sample that looks different under two illuminants (perfectly
unsurprising), perhaps we should apply it to a single sample that looks
the same under different illuminants? (And then begin to look for
combinations of dyes, pigments, substrates, etc. that will achieve it.)
--
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Rudy Vonk
Oviedo, Spain
<email@hidden>
+34 607 354100
You can't always want what you get.
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