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Fragment of Ombro-Cinéma Film no. 2 (without line-screen) At least fourteen different "films" with twelve images each were available, ten in black and white and four in color. The strips varied in length from circa 2.5 meters to more than 4 meter. [22] [23] [24] Series in black and white: Film N° 1. Scènes des rues (Street scenes) Film N° 2.
The film strips, or film cards, were fed through a slide viewer similar to a View-Master, which was art deco or streamlined in style. The viewers were made of bakelite and available in multiple colors. When held up to light the images appeared in 3D. The films were based on attractive scenery, children's stories, travel, night life, and current ...
During development, the exposed silver salts are converted to metallic silver, just as with black-and-white film. But in a color film, the by-products of the development reaction simultaneously combine with chemicals known as color couplers that are included either in the film itself or in the developer solution to form colored dyes.
Two frames of a vertical filmstrip take up roughly the same amount of space as a single frame on the horizontal. Including its guard band, a vertical filmstrip could contain up to 64 images, while a horizontal oriented strip usually contained 32 images. This is based on the equivalent of a 25 exposure length of 35mm still camera film.
As a bipack color process, the photographer loaded a standard camera with two film stocks: an orthochromatic strip dyed orange-red and a panchromatic strip behind it. The orthochromatic film stock recorded only blue and green, and its orange-red dye (analogous to a Wratten 23-A filter) filtered out everything but orange and red light to the panchromatic film stock.
An analog recording medium for motion pictures that is recorded on by a movie camera, developed, edited, and then projected on to a screen by a projector. Film stock consists of a long strip of transparent plastic film base coated on one side with a gelatin emulsion containing microscopic light-sensitive silver halide crystals. When briefly ...
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Prizma gave a demonstration of color motion pictures in 1917 that used an additive four-color process, using a disk of four filters acting on a single strip of panchromatic film in the camera. The colors were red, yellow, green, and blue, with overlapping wavelengths to prevent pulsating effects on the screen with vivid colors.