From: Sam Wells (email suppressed)
Date: Sat Feb 24 2007 - 20:25:06 PST
>
> Should I be careful about the shade of red? is Back ground best red
> or black?
Well pure reds will go to black; but materials may contain some green
and blue.
>
> I am thinking about making blue glassses to visualise the effect.
> Is this a stupid idea.
It's not a stupid idea, they used to make blue/blue green viewing
glasses (like a monocle) for visualizing using orthochromatic film.
-Sam
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