Re: Neutral grey under different lighting
Re: Neutral grey under different lighting
- Subject: Re: Neutral grey under different lighting
- From: Ken Fleisher <email@hidden>
- Date: Mon, 03 Sep 2007 08:32:26 -0400
On Sep 3, 2007, at 2:59 AM, Ray Maxwell wrote:
Scott Martin wrote:
Fuji Crystal Archive and Kodak Endura are surprisingly susceptible to
metamerism - more so than modern inkjet inks. I suspect this is what
you are seeing and it is common. Less archival papers like Kodak
Royal are less susceptible to metamerism yet less archival.
Just to be clear...
The word metamerism only applies to two color patches when they are
compared. It is not correct to refer to one color from a given ink or
paper and say that it suffers from metamerism. A "meterameric pair of
color patches" means that they appear to match under a given
illuminate. They may not appear to match under another illuminate.
Thanks to Ray and Marco for reminding us again of the correct use of
these terms. I would go one step further to add that even if we '"were"
talking about two color samples and not just one, it is still incorrect
to say that it is "susceptible to metamerism". The phenomenon that
Scott meant to refer to (assuming two objects) is "metameric
failure"--the situation when the two samples appeared to match under
one illuminant but failed match under a second illuminant. In the case
where they do appear the same, that is a "metameric match". The term
"metamerism" by itself refers to the phenomenon itself, as Marco and
Ray have described, and makes no implication of whether or not the two
samples match under a given illuminant.
Ken Fleisher
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