Trichromie

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Neil Barnes
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Re: Trichromie

Post by Neil Barnes » Fri Mar 09, 2012 8:08 pm Etc/GMT-1+01:00

I did wonder about that, but there's only one image - the workers under the dam - where there's really obvious movement of people. Even the river shots show very little movement on the water. And the posed shots - the Emir of Bokhara for example - seem to be far too sharp for repeated exposures, and simultaneously too well registered to be separate cameras... I suspect - but can't prove! - a triple camera with RGB filters, much in the manner of stereo cameras. Multi-exposure cameras were prevalent at the time...

Neil

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Re: Trichromie

Post by dave_whatever » Fri Mar 09, 2012 8:59 pm Etc/GMT-1+01:00

Hmmm, maybe you're right - or probably I bet they're a mixture of techniques. There's definitely one shot where it looks like a baby has crawled off half way though the shots!

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Re: Trichromie

Post by Joanna Carter » Sat Mar 10, 2012 9:39 pm Etc/GMT-1+01:00

Actually, the probability is that they were taken with one of several "one shot" cameras that were available. Here is Henri Gaud with one of his :

Image

If it interests you (and you can either read French or use Google translate, then Henri's site is full of all sorts of information on the process.

There's also this site, dedicated to Madame Yevonde, who used such cameras for portrait and fashion photography.
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Re: Trichromie

Post by dave_whatever » Sat Mar 10, 2012 11:43 pm Etc/GMT-1+01:00

Reading the info on that link about the russian shots it says:

"...photographer Sergei Mikhailovich Prokudin-Gorskii (1863-1944) undertook a photographic survey of the Russian Empire with the support of Tsar Nicholas II. He used a specialized camera to capture three black and white images in fairly quick succession, using red, green and blue filters..."

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Re: Trichromie

Post by Joanna Carter » Sat Mar 10, 2012 11:50 pm Etc/GMT-1+01:00

Yes, there were other cameras, which were essentially three boxes side by side, which I gather you had to open the "shutters" one at a time. Aren't you glad they invented colour film? :roll: Mind you, the results I got from three shots, one after the other, were something special; very much like printing colour neg film, where you decide the rendering yourself but with the same dynamic range as B&W film :)
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Neil Barnes
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Re: Trichromie

Post by Neil Barnes » Sun Mar 11, 2012 9:35 am Etc/GMT-1+01:00

Colour? It's a passing fad. No good will come of it.

I need to spend some time on that site (with Google - je parle Francais comme un vache Espagnol) but today is a day to go paragliding. Somehow, I can't see an easy way to add a 5kg camera to a 20kg aircraft...

Neil

p.s. did I post a link to my technique for *2* filter trichromie (dichromie?) some time ago?

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Re: Trichromie

Post by dave_whatever » Wed Mar 28, 2012 9:50 pm Etc/GMT-1+01:00

Was reading up on this today after I saw another link about it. Turns out the camera setup used was like this:

Image

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