On Fri, 19 Nov 2004, John Allain wrote:
Guess I'm just partial to what NASA does. Throw
down a few reference
colors next to the thing, take a color photograph, and postprocess the
reference colors to what they should be. Although now I see that that is
like the problem of describing right and left to an alien. Where do you
get the reference colors in the first place?
Kodak.
18% ND gray card, (readily available from any TECHNICAL photo supply)
and you can use the color references in the Kodak
pocket dataguide (almost certainly discontinued?)
Guess one of us has to find
a vendor for the three swatches to mail to requesting parties.