[alt-photo] Re: Anthotype show in Washington DC 1990's

[Suzanne Izzo]

On 8/2/2011 11:11 AM, Robert Tilden wrote:
> Prokudin-Gorskii used something called "digichromatography" which involved
> using three plates, one each for RGB. Early TechniColor!
>
> Autochrome, on the other hand, used dyed potato-starch grains to generate
> the color images...

You are right of course.  The Library of Congress doesn't seem to give 
the photographic process for its holdings (or I missed it), but the 
Prokudin-Gorskii photographs are indeed on glass plates and don't use 
the the autochrome process.

Suzanne