Brewster Color was an early subtractive color -model film process.
14-421: A two color process was invented by Percy Douglas Brewster in 1913, based on the earlier work of William Friese-Greene . It attempted to compensate for previous methods' problems with contrast . Brewster introduced a three color process in 1935, in an unsuccessful attempt to compete with Technicolor . In his first patent application , filed February 11, 1913, American inventor Percy Douglas Brewster described
28-417: A "method and apparatus for color cinematography." On October 7, 1941, the judge overruled defense objections to some of the plaintiff's interrogatories . This procedural decision has been cited in some subsequent cases, as "2 F.R.D. 186, 51 U.S.P.Q. 319". No further public filings were made by Brewster, suggesting that the case may have been settled out of court. RG color space An RG color model
42-477: A linear gamut of colors , which can reproduce only a fraction of the colors possible with a trichromatic color space. The appearance of the color gamut changes depending on the primary colors chosen. When the primaries are complementary colors (e.g. red and cyan), then an equal mixture of the primaries will yield a neutral color (gray or white). However, since red and green are not complementary colors, an equal mixture of these primaries will yield yellow, and
56-417: A neutral color cannot be reproduced by the color space. Until recently, its primary use was in low-cost LED displays in which red and green LEDs were more common and cheaper than the still nascent blue LED technology. However, this preference no longer applies to modern devices. In modern applications, the red and green primaries are equal to the primaries used in typical RGB color spaces . In this case,
70-418: A new color film process: The exposure is made through a ray filter, preferably light yellow in color and adapted to cut off all the violet and ultra-violet rays of light. The green and blue light with the addition of some yellow, after passing through the ray filter, acts upon the panchromatic emulsion on the front of the film, while the red and orange light with some yellow passes through the film and acts upon
84-498: A report to l'Académie des sciences describing how to project three-dimensional magic lantern slide shows using red and green filters to an audience wearing red and green goggles. Subsequently he was chronicled as being responsible for the first realisation of 3D images using anaglyphs. Kinemacolor Too Many Requests If you report this error to the Wikimedia System Administrators, please include
98-557: A three color process which added yellow tinting. Though demonstration films received praise from members of the Royal Photographic Society for their "remarkable steadiness" and "extraordinarily good reds", this method failed to meet with commercial success. Brewster filed a lawsuit against Technicolor, Inc. and Technicolor Motion Picture Corporation on April 1, 1941. It sought $ 100,000 in damages and an injunction , stating that they had infringed on patents for
112-411: Is a dichromatic color model represented by red and green primary colors . These can only reproduce a fraction of the colors possible with a trichromatic color space, such as for human color vision . The name of the model comes from the initials of the two primary colors: red and green. The model may be either additive or subtractive . It was used to display 3D images using anaglyphs since
126-564: The 1850s. Despite its shortcomings in color reproduction , the RG model was used in early color processes for films from 1906 to 1929 ( Kinemacolor , Prizma , Technicolor , Brewster Color , Kodachrome I and Raycol ). The additive RG color model uses red and green primaries. It was used in several processes during the early innovations of color photography, including Kinemacolor , Prizma , Technicolor I, and Raycol . The primaries are added together in varying proportions to reproduce
140-403: The RG color model can be achieved by disabling the blue light source. The subtractive RG color model uses red and green filters for film exposure, but complementary cyan-green (for red) and orange-red (for green) for the developed prints. This allows the generation of white, although the color model cannot achieve black, regardless of the primaries chosen. It was used in several processes during
154-687: The early innovations of color photography, including on Brewster Color I, Kodachrome I , Prizma II, and Technicolor II. A similar color model, called RGK adds a black channel, which allows for the reproduction of black and other dark shades. However, it does not allow the reproduction of neutral colors (gray/white) because the primaries are not complementary. Outside of a few low-cost high-volume applications, such as packaging and labelling , RG and RGK are no longer in use because devices providing larger gamuts such as CMYK are in widespread use. In 1858, in France, Joseph D'Almeida delivered
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#1732779937274168-572: The late 1920s, in favor of the Prizma process. In April 1944, a syndicate was formed to purchase the rights to the Brewster Color process and use it to produce films at studios in New York and Washington, D.C. Stanley Neal, member of the syndicate and owner of its laboratory, was mainly known for the production of industrial films and advertising shorts . In 1935, Brewster introduced
182-410: The panchromatic emulsion on the back of the film. The color that the transparent emulsion is stained prevents the passage of a substantial amount of blue and green light through the film to act upon the panchromatic film on the back. Over the next eight years, Brewster filed a series of further patents pertaining to photographic film, film development , color cinematography, and various improvements to
196-736: The process. In 1917, a patent for a method of "Coloring or Dyeing Photographic Images" was issued to Hoyt Miller, chief chemist of the Brewster Color Film Corporation, and assigned to the corporation. Brewster's process was used for the first color animated cartoon , 1920's The Debut of Thomas Cat . However the production company, Bray Pictures , deemed the process to be too expensive, and did not employ it again. As other color processes became available, Brewster Color continued to be preferred by some filmmakers due to its relatively low cost and greater availability for small production runs. It began to fall out of use in
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