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615 - Grapho-Stereochrome" camera E. Mazo Paris, various formats, with three lenses, circa 1910. Includes bag, tripod and frames. As is. N.B. Jean-Marie PRADES: The camera is based on a 9 x 14 cm folding chamber, with filters and shutter adapted to the various color photography processes. The camera is designed for the Tauleigne - Mazo process, already described, but also for the Omnicolore Jougla and Dioptichrome Dufay processes. The camera is equipped with three lenses: a central lens for mono photography in 9 x 13 cm or 9 x 14 cm format, and two lenses for stereoscopic photography in 6 x 13 cm format. The filters for the Tauleigne trichrome process are the traditional Red-Orange, Green and Blue-Violet. A Yellow filter is used for the Omnicolore and Dioptichrome processes; grid plates are more sensitive to blue and violet radiation and much less to green and orange, hence the use of this filter color to attenuate certain radiations while reinforcing others (...). Visuals and texts "Autour d'une collection2 " Collection JMP Club Niépce Lumière, pp. 182-183. Expert Isabelle Cazeils. Provenance: Jean-Marie PRADES Collection. Grapho-Stereochrome' camera.
Grapho-Stereochrome" camera E. Mazo Paris, various formats, with three lenses, circa 1910. Includes bag, tripod and frames. As is. N.B. Jean-Marie PRADES: The camera is based on a 9 x 14 cm folding chamber, with filters and shutter adapted to the various color photography processes. The camera is designed for the Tauleigne - Mazo process, already described, but also for the Omnicolore Jougla and Dioptichrome Dufay processes. The camera is equipped with three lenses: a central lens for mono photography in 9 x 13 cm or 9 x 14 cm format, and two lenses for stereoscopic photography in 6 x 13 cm format. The filters for the Tauleigne trichrome process are the traditional Red-Orange, Green and Blue-Violet. A Yellow filter is used for the Omnicolore and Dioptichrome processes; grid plates are more sensitive to blue and violet radiation and much less to green and orange, hence the use of this filter color to attenuate certain radiations while reinforcing others (...). Visuals and texts "Autour d'une collection2 " Collection JMP Club Niépce Lumière, pp. 182-183. Expert Isabelle Cazeils. Provenance: Jean-Marie PRADES Collection. Grapho-Stereochrome' camera.