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#1
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Rediscovering colour photography by direct trichromy
Hi,
My good friend Henri Gaud try to rediscover colour photography by direct trichromy .... He achieved successfully fine colour 8"x10"photographs, with triX film sheets. The first theoric issue is he http://www.galerie-photo.com/test-trichromie.html and his blog is very active: http://photothequegaud.free.fr/trichromie/ The text is in french, but let's see the photographic results! regards Christophe |
#2
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Rediscovering colour photography by direct trichromy
Christophe wrote:
Hi, My good friend Henri Gaud try to rediscover colour photography by direct trichromy .... He achieved successfully fine colour 8"x10"photographs, with triX film sheets. The first theoric issue is he http://www.galerie-photo.com/test-trichromie.html and his blog is very active: http://photothequegaud.free.fr/trichromie/ The text is in french, but let's see the photographic results! regards Christophe This looks like the technique that Russian guy developed for taking 3 images sequentially using R,G,B (or was it CMY) filters. Looks pretty good except for the landscapes where the clouds move between shots and & create fringing. |
#3
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Rediscovering colour photography by direct trichromy
Pudentame a écrit : This looks like the technique that Russian guy developed for taking 3 images sequentially using R,G,B (or was it CMY) filters. Looks pretty good except for the landscapes where the clouds move between shots and & create fringing. The russian guy name is Sergei Mikhailovich Prokudin-Gorskii http://www.cs.cmu.edu/~dellaert/aligned/ A french inventor, Auguste-Jean-Baptiste TAULEIGNE, developped his own trichromy process in the early XXth century http://www.medarus.org/Ardeche/07cel...tauleigne.html Christophe |
#4
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Rediscovering colour photography by direct trichromy
Christophe wrote:
Pudentame a écrit : This looks like the technique that Russian guy developed for taking 3 images sequentially using R,G,B (or was it CMY) filters. Looks pretty good except for the landscapes where the clouds move between shots and & create fringing. The russian guy name is Sergei Mikhailovich Prokudin-Gorskii http://www.cs.cmu.edu/~dellaert/aligned/ A french inventor, Auguste-Jean-Baptiste TAULEIGNE, developped his own trichromy process in the early XXth century http://www.medarus.org/Ardeche/07cel...tauleigne.html Christophe Yup. Anyway, I thought they looked pretty good. |
#5
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Rediscovering colour photography by direct trichromy
Pudentame wrote: Christophe wrote: Pudentame a écrit : This looks like the technique that Russian guy developed for taking 3 images sequentially using R,G,B (or was it CMY) filters. Looks pretty good except for the landscapes where the clouds move between shots and & create fringing. The russian guy name is Sergei Mikhailovich Prokudin-Gorskii http://www.cs.cmu.edu/~dellaert/aligned/ A french inventor, Auguste-Jean-Baptiste TAULEIGNE, developped his own trichromy process in the early XXth century http://www.medarus.org/Ardeche/07cel...tauleigne.html Christophe Yup. Anyway, I thought they looked pretty good. Please excuse me if I'm way off base here, but I remember a tri color camera made in the 1950s that simultaneously shot 3 filtered B&W sheets of 4 X 5 film that allowed one to directly print the 3 colors of a color separation w/o making the separation. I believe that Tri-X or a faster film was used due to the huge light losses due to the splitting & filtering. Does that have any relevance to this discussion? Regards, John Drew |
#6
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Rediscovering colour photography by direct trichromy
john wrote:
Pudentame wrote: Christophe wrote: Pudentame a écrit : This looks like the technique that Russian guy developed for taking 3 images sequentially using R,G,B (or was it CMY) filters. Looks pretty good except for the landscapes where the clouds move between shots and & create fringing. The russian guy name is Sergei Mikhailovich Prokudin-Gorskii http://www.cs.cmu.edu/~dellaert/aligned/ A french inventor, Auguste-Jean-Baptiste TAULEIGNE, developped his own trichromy process in the early XXth century http://www.medarus.org/Ardeche/07cel...tauleigne.html Christophe Yup. Anyway, I thought they looked pretty good. Please excuse me if I'm way off base here, but I remember a tri color camera made in the 1950s that simultaneously shot 3 filtered B&W sheets of 4 X 5 film that allowed one to directly print the 3 colors of a color separation w/o making the separation. I believe that Tri-X or a faster film was used due to the huge light losses due to the splitting & filtering. Does that have any relevance to this discussion? Regards, John Drew If memory serves, that's how Technicolor film cameras work, a beam splitter and filters expose 3 B&W films simultaneously. |
#7
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Rediscovering colour photography by direct trichromy
In article ,
Pudentame wrote: If memory serves, that's how Technicolor film cameras work, a beam splitter and filters expose 3 B&W films simultaneously. Looks that way: http://en.wikipedia.org/wiki/Technicolor |
#8
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Rediscovering colour photography by direct trichromy
Pudentame wrote: john wrote: Pudentame wrote: Christophe wrote: Pudentame a écrit : This looks like the technique that Russian guy developed for taking 3 images sequentially using R,G,B (or was it CMY) filters. Looks pretty good except for the landscapes where the clouds move between shots and & create fringing. The russian guy name is Sergei Mikhailovich Prokudin-Gorskii http://www.cs.cmu.edu/~dellaert/aligned/ A french inventor, Auguste-Jean-Baptiste TAULEIGNE, developped his own trichromy process in the early XXth century http://www.medarus.org/Ardeche/07cel...tauleigne.html Christophe Yup. Anyway, I thought they looked pretty good. Please excuse me if I'm way off base here, but I remember a tri color camera made in the 1950s that simultaneously shot 3 filtered B&W sheets of 4 X 5 film that allowed one to directly print the 3 colors of a color separation w/o making the separation. I believe that Tri-X or a faster film was used due to the huge light losses due to the splitting & filtering. Does that have any relevance to this discussion? Regards, John Drew If memory serves, that's how Technicolor film cameras work, a beam splitter and filters expose 3 B&W films simultaneously. John -- technicolor was a process used for most early color motion picture films through the 1950s, when the expense was deemed too great and dye color films began to be used. I don't know if color separations were ever used for still imaging other than dye transfer. Gone With The Wind and The Wizard of Oz, if I remember correctly, are among the first examples of techicolor motion picture photography. It's demise is a sad loss to motion picture films (if anyone doubts this see Lawerence of Arabia on DVD.) In any case I was required in college to produce a tricolor separation image using three b&w separation exposures. The color is unmatched IMO. However, tricolor photography was first developed by James Clerk Maxwell in 1861, not Tauleigne or Gorskii, based on a early 1800s theory by Thomas Young (who also produce the first ever nonextant photograph in 1802)as well as Herman Helmholtz, that all colors could be reproduced using additive primary RGB or complimentary subtractive colors (Yellow, Magenta, Cyan.) In 1861, Maxwell produced the first ever color separation color image using three projected lantern slides called Tartan Ribbon (a color separation image of a ribbon.) |
#9
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Rediscovering colour photography by direct trichromy
In article ,
Tom Phillips wrote: John -- technicolor was a process used for most early color motion picture films through the 1950s, when the expense was deemed too great and dye color films began to be used. Better film speed was a factor too. Technicolor was very slow and required an obnoxious amount of light. |
#10
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Rediscovering colour photography by direct trichromy
Tom Phillips wrote:
Pudentame wrote: john wrote: Pudentame wrote: Christophe wrote: Pudentame a écrit : This looks like the technique that Russian guy developed for taking 3 images sequentially using R,G,B (or was it CMY) filters. In any case I was required in college to produce a tricolor separation image using three b&w separation exposures. The color is unmatched IMO. However, tricolor photography was first developed by James Clerk Maxwell in 1861, not Tauleigne or Gorskii, based on a early 1800s theory by Thomas Young (who also produce the first ever nonextant photograph in 1802)as well as Herman Helmholtz, that all colors could be reproduced using additive primary RGB or complimentary subtractive colors (Yellow, Magenta, Cyan.) In 1861, Maxwell produced the first ever color separation color image using three projected lantern slides called Tartan Ribbon (a color separation image of a ribbon.) Perhaps I wasn't clear. I make no claim the Russian guy invented color photography, only that the images referred to in the original post reminded me of the images he produced. |
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