Procédé Tetrachrome
Description
Based on four primary colors, the process successively recorded two simultaneous images for two primary colors each. In projection, the four images were combined on screen, supposedly via a regular projector.
Original Technical Papers and Primary Sources
Egrot, L. (1913): Une Grande Actualité Scientifique. Films Tetrachromes. In: Ciné-Journal. Organe Hebdomadaire de l’Industrie Cinématographique, 6,233, Aug., p. 17. (in French) View Quote
Secondary Sources
Anonymous (1913): The New Breon-Randabel Stereoscopic Color Film. In: Camera Craft. A Photographic Monthly, 20,7, Jul., pp. 335–336.
Anonymous (1913): Tetrachrome Colour Films. In: The Bioscope, 330,XVIII, Feb., p. 397. View Quote
Anonymous (1913): Colour and Stereoscopic Effect. In: The Bioscope, 328,XVIII, Jan., p. 247. View Quote
Egrot, L. (1913): Une Grande Actualité Scientifique. Films Tetrachromes. In: Ciné-Journal. Organe Hebdomadaire de l’Industrie Cinématographique, 6,233, Feb., p. 17.
Patents
FR 466 827; FR 464 345; FR 465 496; FR 453 754; FR 18 403; FR 465 543; BE 253 190
Contemporary Reception
Anonymous (1913): The New Breon-Randabel Stereoscopic Color Film. In: Camera Craft. A Photographic Monthly, 20,7, Jul., pp. 335–336. View Quote