From: Richard Knoppow (dickburk@ix.netcom.com)
Date: 09/23/03-05:53:37 PM Z
----- Original Message -----
From: "Steve Bell" <sbell1@artic.edu>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Monday, September 22, 2003 11:21 PM
Subject: Autochromes
> Hey Everyone,
>
> last week in my photo class, we went to the museum to see
examples of color
> work in different processes. one of the images i was
privelaged to see was an
> autochrome from i think 1907. it was amazingly beautiful.
i was stunned.
> amazed.
>
> this has got me wondering. it was the first time i'd even
heard of the
> process! the explanations that i've read online about the
process seem to
> imply that it's relatively mysterious and somewhat
difficult. this has led me
> to you, my friends on the alt process list, because to
tell you the truth, i
> don't know another group of people who would be as excited
by the
> words "Mysterious" and the phrase "somewhat difficult", as
you lot.
>
> so does anyone have any info on how possible this process
is today? anyone out
> there making Autochromes? anything at all would be
helpful.
>
> thanks,
>
> Steve
>
I have been having e-mail problems for about a week so I am
missing many messages in this and other lists. Please excuse
this if it goes over ground already dealt with by others.
The best sources of information on Autochrome and other
early color processes is:
1, _The History of Three Color Photography_ E.J.Wall,
Original publication, Boston, 1925, The American
Photographic Publishing Co. Reprinted, London, 1970, The
Focal Press ISBN 0-240-50702-9
2, _History of Color Photography_ J.S.Friedman, Original
publication; Boston, 1944, reprinted 1956, The American
Photographic Publishing Co. Reprinted as the second edition,
with added material, London, 1972, The Focal Press ISBN
0-240-44888-X
Both books have extensive descriptions of the Autochrome
process and other screen plate color methods.
The Autochrome plate employed color filters consisting of
dyed starch grains coated over the emulsion. Agfa and others
produced color films using a similar technique. Other common
screen plates were the Finley and Dufaycolor plates which
employed color matrices either printed on the film or as
separate filters.
Dufaycolor was made into the 1930's, maybe even later.
While Kodachrome supplanted most of the earlier color
processes it did not completely replace them because it had
to be processed by Kodak. Some screen plate methods
continued in production into the 1940's and three color
"one-shot" cameras continued to be used well into the
1950's.
--- Richard Knoppow Los Angeles, CA, USA dickburk@ix.netcom.com
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