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Anamorphic Format
Anamorphic format is the cinematography technique of shooting a widescreen picture on standard 35 mm film or other visual recording media with a non-widescreen native aspect ratio. It also refers to the projection format in which a distorted image is "stretched" by an anamorphic projection lens to recreate the original aspect ratio on the viewing screen (not to be confused with anamorphic widescreen, a different video encoding concept that uses similar principles but different means). The word ''anamorphic'' and its derivatives stem from the Greek ''anamorphoun'' ("to transform"), compound of ''morphé'' ("form, shape") with the prefix ''aná'' ("back, against"). In the late 1990s and 2000s, anamorphic lost popularity in comparison to "flat" (or "spherical") formats such as Super 35 with the advent of digital intermediates; however, in the years since digital cinema cameras and projectors have become commonplace, anamorphic has experienced a considerable resurgence of popular ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Negative Pulldown
Negative pulldown is the manner in which an image is exposed on a film stock, described in the number of film perforations spanned by an individual frame. It can also describe the orientation of the image on the negative, whether it is captured horizontally or vertically. Changing the number of exposed perforations allows a cinematographer to change both the aspect ratio of the image and the size of the area on the film stock that the image occupies (which affects image clarity). The most common negative pulldowns for 35 mm film are 4-perf and 3-perf, the latter of which is usually used in conjunction with Super 35. 2-perf, used in Techniscope in the 1960s, is enjoying a slight resurgence due to the birth of digital intermediate techniques eliminating the need for optical lab work. Vertical pulldown is overwhelmingly the dominant axis of motion in cinematography, although horizontal pulldown is used in IMAX, VistaVision (still in use for some visual effects work), and in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leon Douglass
Leon Forrest Douglass (March 12, 1869 – September 7, 1940) was an American inventor and co-founder of the Victor Talking Machine Company who registered approximately fifty patents, mostly for film and sound recording techniques. Life and professional career Douglass was born in rural Nebraska, near present-day Syracuse. His parents were Seymour James Douglass, a millwright and carpenter, and Mate (Fuller) Douglass. He attended grammar school in Lincoln, Nebraska, was apprenticed to a printer, at eleven was working as a telegraph messenger, and by seventeen was telephone exchange manager for the Nebraska Telephone Company in Seward.Gracyk, Tim"Leon F. Douglass: Inventor and Victor's First Vice-President"Accessed July 13, 2008. Phonograph In 1888, Douglass saw a phonograph for the first time and was fascinated. He made his own and took it to Omaha to show it to E.A. Benson, President of the Nebraska Phonograph Co., who hired him as the company’s agent for the western part of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panavision
Panavision is an American motion picture equipment company founded in 1953 specializing in cameras and lenses, based in Woodland Hills, California. Formed by Robert Gottschalk as a small partnership to create anamorphic projection lenses during the widescreen boom in the 1950s, Panavision expanded its product lines to meet the demands of modern filmmakers. The company introduced its first products in 1954. Originally a provider of CinemaScope accessories, the company's line of anamorphic widescreen lenses soon became the industry leader. In 1972, Panavision helped revolutionize filmmaking with the lightweight Panaflex 35 mm movie camera. The company has introduced other cameras such as the Millennium XL (1999) and the digital video Genesis (2004). Panavision operates exclusively as a rental facility—the company owns its entire inventory, unlike most of its competitors. Early history Robert Gottschalk founded Panavision in late 1953, in partnership with Richard Moore, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synchronization
Synchronization is the coordination of events to operate a system in unison. For example, the conductor of an orchestra keeps the orchestra synchronized or ''in time''. Systems that operate with all parts in synchrony are said to be synchronous or ''in sync''—and those that are not are '' asynchronous''. Today, time synchronization can occur between systems around the world through satellite navigation signals and other time and frequency transfer techniques. Navigation and railways Time-keeping and synchronization of clocks is a critical problem in long-distance ocean navigation. Before radio navigation and satellite-based navigation, navigators required accurate time in conjunction with astronomical observations to determine how far east or west their vessel traveled. The invention of an accurate marine chronometer revolutionized marine navigation. By the end of the 19th century, important ports provided time signals in the form of a signal gun, flag, or dropping time ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cinerama
Cinerama is a widescreen process that originally projected images simultaneously from three synchronized 35mm projectors onto a huge, deeply curved screen, subtending 146° of arc. The trademarked process was marketed by the Cinerama corporation. It was the first of a number of novel processes introduced during the 1950s, when the movie industry was reacting to competition from television. Cinerama was presented to the public as a theatrical event, with reserved seating and printed programs, and audience members often dressed in their best attire for the evening. The Cinerama projection screen, rather than being a continuous surface like most screens, is made of hundreds of individual vertical strips of standard perforated screen material, each about inch (~22 mm) wide, with each strip angled to face the audience, so as to prevent light scattered from one end of the deeply curved screen from reflecting across the screen and washing out the image on the opposite end. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photographic Lens
A camera lens (also known as photographic lens or photographic objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically. There is no major difference in principle between a lens used for a still camera, a video camera, a telescope, a microscope, or other apparatus, but the details of design and construction are different. A lens might be permanently fixed to a camera, or it might be interchangeable with lenses of different focal lengths, apertures, and other properties. While in principle a simple convex lens will suffice, in practice a compound lens made up of a number of optical lens elements is required to correct (as much as possible) the many optical aberrations that arise. Some aberrations will be present in any lens system. It is the job of the lens designer to balance these and produce a desi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cylindrical Lens
A cylindrical lens is a lens which focuses light into a line instead of a point, as a spherical lens would. The curved face or faces of a cylindrical lens are sections of a cylinder, and focus the image passing through it into a line parallel to intersection of the surface of the lens and a plane tangent to it along the cylinder's axis. The lens converges or diverges the image in the direction perpendicular to this line, and leaves it unaltered in the direction parallel to its cylinder's axis (in the tangent plane). A toric lens combines the effect of a cylindrical lens with that of an ordinary spherical lens. Uses Uses in optometry * Cylindrical lenses are prescribed to correct astigmatism. * Cross cylinder, which is a combination of two cylindrical lenses with equal strength and opposite power, is used in subjective refraction to diagnose astigmatism, and assess the strength and axis of the astigmatic power etc. * Maddox rods, made up of cylindrical lenses arranged in parallel, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technirama
__NOTOC__ Technirama is a screen process that has been used by some film production houses as an alternative to CinemaScope. It was first used in 1957 but fell into disuse in the mid-1960s. The process was invented by Technicolor and is an anamorphic process with a screen ratio the same as revised CinemaScope (2.35:1) (which became the standard), but it is actually 2.25:1 on the negative.https://www.widescreen.org/aspect_ratios.shtml Technical The Technirama process used a film frame area twice as large as CinemaScope. This gave the former a sharper image with less photographic grain. Cameras used 35-mm film running horizontally with an 8-perforation frame, double the normal size, exactly the same as VistaVision. VistaVision cameras were sometimes adapted. Technirama used 1.5:1 anamorphic curved mirror optics in front of the camera lens (unlike CinemaScope's cylindrical lenses which squeezed the image in a 1:2 ratio). In the laboratory, the 8-perforation horizontal negative woul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Total Internal Reflection
Total internal reflection (TIR) is the optical phenomenon in which waves arriving at the interface (boundary) from one medium to another (e.g., from water to air) are not refracted into the second ("external") medium, but completely reflected back into the first ("internal") medium. It occurs when the second medium has a higher wave speed (i.e., lower refractive index) than the first, and the waves are incident at a sufficiently oblique angle on the interface. For example, the water-to-air surface in a typical fish tank, when viewed obliquely from below, reflects the underwater scene like a mirror with no loss of brightness (Fig.1). TIR occurs not only with electromagnetic waves such as light and microwaves, but also with other types of waves, including sound and water waves. If the waves are capable of forming a narrow beam (Fig.2), the reflection tends to be described in terms of "rays" rather than waves; in a medium whose properties are independent of direction, such as air, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultra Panavision
Ultra Panavision 70 and MGM Camera 65 were, from 1957 to 1966, the marketing brands that identified motion pictures photographed with Panavision's anamorphic movie camera lenses on 65 mm film. Ultra Panavision 70 and MGM Camera 65 were shot at 24 frames per second (fps) using anamorphic camera lenses. Ultra Panavision 70 and MGM Camera 65's anamorphic lenses compressed the image 1.25 times, yielding an extremely wide aspect ratio of 2.76:1 (when a 70 mm projection print was used). Ultra Panavision saw much less use than its sibling, the more popular Super Panavision 70, and was only used on ten films from 1957 to 1966. However, nearly fifty years later, Robert Richardson famously resurrected Ultra Panavision 70 after the lens test he came to do at the Panavision headquarters for the upcoming project with Quentin Tarantino, where he discovered that the lenses and equipment were still intact. Tarantino was fascinated by this and was able to refurbish the lenses for use in his next f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Robe (film)
''The Robe'' is a 1953 American fictional Biblical epic film that tells the story of a Roman military tribune who commands the unit that is responsible for the Crucifixion of Jesus. The film was released by 20th Century Fox and was the first film released in the widescreen process CinemaScope. Like other early CinemaScope films, ''The Robe'' was shot with Henri Chrétien's original Hypergonar anamorphic lenses. The film was directed by Henry Koster and produced by Frank Ross. The screenplay was adapted by Gina Kaus, Albert Maltz, and Philip Dunne — although Maltz's place among the blacklisted Hollywood 10 led to his being denied his writing credit for many years — from Lloyd C. Douglas's 1942 novel. The score was composed by Alfred Newman, and the cinematography was by Leon Shamroy. The film stars Richard Burton, Jean Simmons, Victor Mature, and Michael Rennie and co-stars Dean Jagger, Jay Robinson, Richard Boone, and Jeff Morrow. The 1954 sequel, ''Demetrius and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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