“The Hérault Trichrome process was demonstrated in Paris on 1 October 1926, with three films made by A. Rodde — a fashion show, a documentary on Brittany and a tableau of the Legend of the King of Ys. Hérault Trichrome was an extension of the Kinemacolor principle to three-colour work, with successively exposed red, green and blue frames. The positive print was stained in these primary colours and projected at 24 frames per second. The colour flickering must have been almost intolerable.”
(Coe, Brian (1981): The History of Movie Photography. Westfield, N. J.: Eastview Editions, p. 123.)
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Original Technical Papers and Primary Sources
Rodde, M., The Hérault Trichome Process. In: Bulletin de la Société française de la Photographie, vol. 15 (Mar., 1928), p. 80.
Coe, Brian (1981): The History of Movie Photography. Westfield, N.J.: Eastview Editions, p. 123.
Klein, Adrian Bernhard = Cornwell-Clyne (1940): Colour Cinematography. Boston: American Photographic Pub. Co.. 2nd revised edition, pp. 161-162.
Society of Motion Picture Engineers (1930): Report. Progress in the Motion Picture Industry. In: Journal of the Society of Motion Picture Engineers, 15, December 1930, pp. 791–793, on pp. 791.
Anonymous (1928): Der Naturfarbenfilm Hérault. In: Die Kinotechnik, 10,11, Jun., pp. 301–302. (in German)