Digital BW, The Print

Well said Mitch,

I pointed out a while ago that 'metamerism' specifically refers to the
situation where two colors are identical under one light and different under
another. That is not the same as the general shifts in color that everything
exhibits (some more, some less) under different lights. Is there a word that
describes this general shift?

Bob Frost.

----- Original Message -----
From: "Mitch Alland" <malland@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Friday, July 26, 2002 11:04 AM
Subject: [Digital BW] Re: New Epsons: metamerism (was: Black ink info on
Epson 7 ink sets)


> For: Jerry Olson <jerryolson@...>
>
> >For me, it depends on the color of the metamerism and the amount. If the
> >print looks perfect in daylight, (Epson's 1280 oem inkset can print
> >beautiful black and white photographs that are dead on neutral in
> >daylight with legion's photo matte paper), and the metamerism is just
> >slightly brown in tungsten light, (It is with the 1280 oem
> >inkset), Ican live with it.
>
> 1. What you're describing simply ain't metamerism: it's a fact of the
physics of light that all prints will look different in different light as
the light itself -- tungsten, neon, daylight, etc -- imparts colors to the
print it illuminates. Thus, a perfectly neutral print will appear to be
different in tone under different types of light. Metamerism is the
pheneomenon that a particular tone within a neutral print will look
different from the rest of the tones in the print: a "color cross-over" in
plain English.
>
> 2. Also, I have made extensive tests and do not beleive that the 1280,
even with the best profile, can print "dead on neutral", as you state. There
is always a color cast in some of the tones (but, again, that is not
metamerism).
>
> --Mitch/Bangkok
>
>
>
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