Re: Neutral grey under different lighting
Re: Neutral grey under different lighting
- Subject: Re: Neutral grey under different lighting
- From: Andrew Rodney <email@hidden>
- Date: Mon, 03 Sep 2007 14:51:42 -0600
- Thread-topic: Neutral grey under different lighting
On 9/3/07 2:40 PM, "Roger Breton" wrote:
> CIE Publication 15.2-1986, Section 5.2, page 35, describes metamerism in the
> following way : "Two specimens having identical tristimulus values, XYZ, for
> a given reference illuminant and reference observer are metameric if their
> spectral radiance distributions differ within the visible spectrum".
English translation: They look the same under this illuminant, they are not
the same SPD?
So if I'm understanding some off list comments, they have to look the same
in order for us to use the term metamerism. When they don't look the same,
that's metamerism failure (anit-metamerism if you will).
Andrew
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