photos of Russian empire

[David Goldfarb]

They were done with a process involving three black and white exposures
through different color filters, much the way that color separations for
the pre-digital printing industry were done, and the three images were
combined to produce the final color image.  For the modern exhibition, the
images were scanned and combined digitally.

David A. Goldfarb
Assistant Professor
Department of Slavic Languages
Barnard College
Columbia University
3009 Broadway                           dgoldfarb at barnard.edu
New York, NY 10027-6598                 http://www.echonyc.com/~goldfarb


On Mon, 24 May 2004, Elena Gapova wrote:

> Does anyone know why these photos are in color?
>
> e.g.
>
> ----- Original Message -----
> > A wonderful collection of photographs of the Russian empire is on line
> > at the Library of Congress:
> >
> > http://www.loc.gov/exhibits/empire/
> >
>
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