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Film Perforations
Film perforations, also known as perfs and sprocket holes, are the holes placed in the film stock during manufacturing and used for transporting (by sprockets and claws) and steadying (by pin registration) the film. Films may have different types of perforations depending on film gauge, film format, and intended usage. Perforations are also used as a standard measuring reference within certain camera systems to refer to the size of the frame. Some formats are referred to in terms of the ratio "perforations per frame/gauge size" to provide an easy way of denoting size. For instance, 35mm Academy is also known as 4 perf-35mm; VistaVision is 8 perf-35mm; the long-time standard Todd-AO 70 mm film is 5 perf-70mm; and IMAX is 15 perf-70mm. This description does not indicate whether the film transport is horizontal or vertical, but uncertainty is precluded because there are currently no horizontal systems using the same number of perforations on the same gauge as a vertical one. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
8 Mm Film Types
8 (eight) is the natural number following 7 and preceding 9. In mathematics 8 is: * a composite number, its proper divisors being , , and . It is twice 4 or four times 2. * a power of two, being 2 (two cubed), and is the first number of the form , being an integer greater than 1. * the first number which is neither prime nor semiprime. * the base of the octal number system, which is mostly used with computers. In octal, one digit represents three bits. In modern computers, a byte is a grouping of eight bits, also called an wikt:octet, octet. * a Fibonacci number, being plus . The next Fibonacci number is . 8 is the only positive Fibonacci number, aside from 1, that is a perfect cube. * the only nonzero perfect power that is one less than another perfect power, by Catalan conjecture, Mihăilescu's Theorem. * the order of the smallest non-abelian group all of whose subgroups are normal. * the dimension of the octonions and is the highest possible dimension of a normed divisio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Film Base
A film base is a transparent substrate which acts as a support medium for the photosensitive emulsion that lies atop it. Despite the numerous layers and coatings associated with the emulsion layer, the base generally accounts for the vast majority of the thickness of any given film stock. Since the late 19th century, there have been three major types of film base in use: nitrate (until about 1951), acetate, and polyester. Nitrate In the literature of photography "nitrate" is used as a synonym for the chemical nitrocellulose. It is also referred to as "cellulose nitrate". Nitrocellulose is guncotton, the first replacement propellant for gun powder in firearms. Film stock with a nitrate base was the first transparent flexible plasticized base commercially available, thanks to celluloid developments by John Carbutt, Hannibal Goodwin, and Eastman Kodak in the 1880s. Eastman was the first to manufacture the film stock for public sale, in 1889. Unfortunately, nitrate also had the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Bloc
The Western Bloc, also known as the Free Bloc, the Capitalist Bloc, the American Bloc, and the NATO Bloc, was a coalition of countries that were officially allied with the United States during the Cold War of 1947–1991. It was spearheaded by the member states of NATO, but also included countries that advocated anti-communism and anti-socialism, and likewise were opposed to the Soviet Union and the Warsaw Pact. The term was used to distinguish this anti-Soviet grouping from its pro-Soviet counterpart: the Eastern Bloc. Throughout the protracted period marked by Soviet–American tensions, the governments and the press of the Western Bloc were more inclined to refer to themselves as the Free World or the First World, whereas the Eastern Bloc was often referred to as the "Communist World" or more formally as the " Second World". 1947–1991 Western Bloc associations NATO * Belgium* * Canada* * Denmark* * France* * FR Germany (1955–1990) * Greece (from 1952) * Iceland* ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soviet Union
The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a Federation, federal union of Republics of the Soviet Union, fifteen national republics; in practice, both Government of the Soviet Union, its government and Economy of the Soviet Union, its economy were highly Soviet-type economic planning, centralized until its final years. It was a one-party state governed by the Communist Party of the Soviet Union, with the city of Moscow serving as its capital as well as that of its largest and most populous republic: the Russian Soviet Federative Socialist Republic, Russian SFSR. Other major cities included Saint Petersburg, Leningrad (Russian SFSR), Kyiv, Kiev (Ukrainian Soviet Socialist Republic, Ukrainian SSR), Minsk (Byelorussian Soviet Socialist Republic, Byelorussian SSR), Tas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Bloc
The Eastern Bloc, also known as the Communist Bloc and the Soviet Bloc, was the group of socialist states of Central and Eastern Europe, East Asia, Southeast Asia, Africa, and Latin America under the influence of the Soviet Union that existed during the Cold War (1947–1991). These states followed the ideology of Marxism–Leninism, in opposition to the capitalist Western Bloc. The Eastern Bloc was often called the Second World, whereas the term " First World" referred to the Western Bloc and "Third World" referred to the non-aligned countries that were mainly in Africa, Asia, and Latin America but notably also included former pre-1948 Soviet ally SFR Yugoslavia, which was located in Europe. In Western Europe, the term Eastern Bloc generally referred to the USSR and Central and Eastern European countries in the Comecon (East Germany, Poland, Czechoslovakia, Hungary, Romania, Bulgaria, and Albania). In Asia, the Soviet Bloc comprised Mongolia, Vietnam, Laos, Kampuchea, Nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-speed Photography
High-speed photography is the science of taking pictures of very fast phenomena. In 1948, the Society of Motion Picture and Television Engineers (SMPTE) defined high-speed photography as any set of photographs captured by a camera capable of 69 frames per second or greater, and of at least three consecutive frames . High-speed photography can be considered to be the opposite of time-lapse photography. In common usage, high-speed photography may refer to either or both of the following meanings. The first is that the photograph itself may be taken in a way as to appear to freeze the motion, especially to reduce motion blur. The second is that a series of photographs may be taken at a high sampling frequency or frame rate. The first requires a sensor with good sensitivity and either a very good shuttering system or a very fast strobe light. The second requires some means of capturing successive frames, either with a mechanical device or by moving data off electronic sensors very qu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Release Print
A release print is a copy of a film that is provided to a movie theater for exhibition. Definitions Release prints are not to be confused with other types of prints used in the photochemical post-production process: * Rush prints, or dailies, are one-light, contact-printed copies made from an unedited roll of original camera negative immediately after processing and screened to the cast and crew in order to ensure that the takes can be used in the final film. * Workprints, sometimes called cutting copies, are, like rush prints, copies of a camera negative roll, or from selected takes. A workprint may be roughly corrected for brightness and color balance. The prints are used for editing before the negative itself is conformed, or cut to match the edited workprint. * An answer print is made either from the cut camera negative or an interpositive, depending on the production workflow, in order to verify that the grading ("timing" in American English) conforms to specificatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internegative
An internegative is a motion picture film duplicate. It is the color counterpart to an interpositive, in which a low-contrast color image is used as the positive between an original camera negative and a duplicate negative. After a film is shot, the original negatives—taken directly from the camera equipment—are edited into correct sequence and printed onto fresh stock as a cohesive film, creating an interpositive print used for color timing. From the interpositive, answer prints, which include the color-corrected imagery and a properly synced sound track, are made. Once approved by the studio, the final answer print is made into an internegative used for striking copies that will be delivered to theaters for viewing. Overview Internegatives are the workhorses of the film industry. They are made on exactly the same stock as interpositives. The film processes usually go from one polarity to another, that is: # The camera operator shoots a positive image and the film end ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interpositive
An interpositive, intermediate positive, IP or master positive is an orange-based motion picture film with a positive image made from the edited camera negative. The orange base provides special color characteristics that allow more accurate color reproduction than if the IP had a clear base like an exhibition positive. Description From a traditional photographic perspective, an interpositive (short for ''intermediate positive'') is the negative image of the original camera negative, which is an intermediate step towards creating the positive (exhibition) print. The camera negative is projected onto negative film stock in a liquid environment - termed a wet gate - where the film stock is exposed using a contact process, so creating a like image (in effect, retaining the image in its negative -- i.e. "reversed" -- form) on negative film stock, as an intermediate step. The interpositive historically had only one purpose, namely to be the element which is used to make the interneg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Negative (photography)
In photography, a negative is an image, usually on a strip or sheet of transparent plastic film, in which the lightest areas of the photographed subject appear darkest and the darkest areas appear lightest. This reversed order occurs because the extremely light-sensitive chemicals a camera film must use to capture an image quickly enough for ordinary picture-taking are darkened, rather than bleached, by exposure to light and subsequent photographic processing. In the case of color negatives, the colors are also reversed into their respective complementary colors. Typical color negatives have an overall dull orange tint due to an automatic color-masking feature that ultimately results in improved color reproduction. Negatives are normally used to make positive prints on photographic paper by projecting the negative onto the paper with a photographic enlarger or making a contact print. The paper is also darkened in proportion to its exposure to light, so a second reversal r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Film Perforations
Film perforations, also known as perfs and sprocket holes, are the holes placed in the film stock during manufacturing and used for transporting (by sprockets and claws) and steadying (by pin registration) the film. Films may have different types of perforations depending on film gauge, film format, and intended usage. Perforations are also used as a standard measuring reference within certain camera systems to refer to the size of the frame. Some formats are referred to in terms of the ratio "perforations per frame/gauge size" to provide an easy way of denoting size. For instance, 35mm Academy is also known as 4 perf-35mm; VistaVision is 8 perf-35mm; the long-time standard Todd-AO 70 mm film is 5 perf-70mm; and IMAX is 15 perf-70mm. This description does not indicate whether the film transport is horizontal or vertical, but uncertainty is precluded because there are currently no horizontal systems using the same number of perforations on the same gauge as a vertical one. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell And Howell
Bell and Howell LLC is a U.S.-based services organization and former manufacturer of cameras, lenses, and motion picture machinery, founded in 1907 by two projectionists, and originally headquartered in Wheeling, Illinois. The company is now headquartered in Durham, North Carolina, and currently sells production mail equipment, buy-online-pickup-in-store (BOPIS) smart locker and kiosk solutions, and provides maintenance services for automated, industrial equipment in enterprise-level companies. Since 2010, the Bell + Howell brand name has been extensively licensed for a diverse range of consumer electronics products. History According to its charter, the Bell & Howell Company was incorporated on February 17, 1907. It was duly recorded in the Cook County Record Book eight days later. The first meeting of stockholders took place in the office of Attorney W. G. Strong on February 19 at 10 a.m. (10:00 CT). The first board of directors was chosen for a term of one year: Donald ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
