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Nikkorex
The Nikkorex nameplate was used for a series of 35 mm film, single-lens reflex cameras sold by Japanese optical manufacturer Nippon Kogaku K.K., as well as a series movie cameras and movie projectors. The models, made by other companies, were designed and marketed as low-cost, feature-reduced equipment for the consumer market. Still camera models Nikkorex 35 The Nikkorex 35 was the first model of the Nikkorex series, produced in 1960. To keep costs low compared to the flagship Nikon F, the Nikkorex 35 used a fixed four-element Nikkor-Q 5 cm 2.5 lens instead of an interchangeable F-mount; a Citizen MVL leaf shutter instead of a Leica-inspired focal plane shutter; a fixed, mirror-based viewfinder and fixed focusing screen instead of a glass pentaprism; no instant-return mirror mechanism or mirror lock-up option; no provision for motor drives; and lesser build quality. Built-in metering — a first for a Nikon camera — used a selenium cell above the lens. Controls for met ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikkorex F With NIKKOR-S Auto 1 - 2 F=5cm Lens
The Nikkorex nameplate was used for a series of 35 mm film, single-lens reflex cameras sold by Japanese optical manufacturer Nippon Kogaku K.K., as well as a series movie cameras and movie projectors. The models, made by other companies, were designed and marketed as low-cost, feature-reduced equipment for the consumer market. Still camera models Nikkorex 35 The Nikkorex 35 was the first model of the Nikkorex series, produced in 1960. To keep costs low compared to the flagship Nikon F, the Nikkorex 35 used a fixed four-element Nikkor-Q 5 cm 2.5 lens instead of an interchangeable F-mount; a Citizen MVL leaf shutter instead of a Leica-inspired focal plane shutter; a fixed, mirror-based viewfinder and fixed focusing screen instead of a glass pentaprism; no instant-return mirror mechanism or mirror lock-up option; no provision for motor drives; and lesser build quality. Built-in metering — a first for a Nikon camera — used a selenium cell above the lens. Controls for meter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikkormat
Nikkormat (Nikomat in Japan) was a brand of cameras produced by the Japanese optics company Nippon Kogaku K. K., as a consumer version of the professional Nikon brand. Nikkormat cameras, produced from 1965 until 1978, were simpler and more affordable than Nikon-branded cameras, but accepted the same lenses as the Nikon F series cameras. Note on the Nikkormat metering system The light meter indicates current whose value depends on the amount of light, and three user settings: aperture, shutter speed, and film sensitivity (film speed). In many cameras the three user settings each have a separate resistor with a moving contact. In the Nikkormat there is only a single resistor and a single moving contact: the resistor is on one ring and the contact on another of the concentric rings around the lens mount. The film sensitivity (speed) and the shutter speed combine their values on one ring, while the aperture determines the relative position of the second ring. Using only one m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ricoh
is a Japanese multinational imaging and electronics company. It was founded by the now-defunct commercial division of the Institute of Physical and Chemical Research (Riken) known as the ''Riken Concern'', on 6 February 1936 as . Ricoh's headquarters are located in Ōta, Tokyo. Ricoh produces electronic products, primarily cameras and office equipment such as printers, photocopiers, fax machines, offers Software as a Service (SaaS) document management applications such as DocumentMall, RicohDocs, GlobalScan, Print&Share, MakeLeaps and also offers Projectors. In the late 1990s through early 2000s, the company grew to become the largest copier manufacturer in the world. During this time, Ricoh acquired Savin, Gestetner, Lanier, Rex-Rotary, Monroe, Nashuatec, IKON and most recently IBM Printing Systems Division / Infoprint Solutions Company. Although the Monroe brand was discontinued, products continue to be marketed worldwide under the remaining brand names. In 2006, Ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shutter Speed
In photography, shutter speed or exposure time is the length of time that the film or digital sensor inside the camera is exposed to light (that is, when the camera's shutter (photography), shutter is open) when taking a photograph. The amount of light that reaches the Photographic film, film or image sensor is proportional to the exposure time. of a second will let half as much light in as . Introduction The camera's shutter speed, the lens's aperture or f-stop, and the scene's luminance together determine the amount of light that reaches the film or sensor (the exposure (photography), exposure). Exposure value (EV) is a quantity that accounts for the shutter speed and the f-number. Once the sensitivity to light of the recording surface (either film or sensor) is set in numbers expressed in "Film speed#ISO, ISOs" (e.g. 200 ISO, 400 ISO), the light emitted by the scene photographed can be controlled through aperture and shutter-speed to match the film or sensor sensitivit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentaprism
A pentaprism is a five-sided reflecting prism (optics), prism used to deviate a beam of light by a constant 90°, even if the entry beam is not at 90° to the prism. The beam reflects inside the prism ''twice'', allowing the transmission of an image through a right angle without inverting it (that is, without changing the image's Chirality (electromagnetism), handedness) as an ordinary right-angle prism or mirror would. The reflections inside the prism are not caused by total internal reflection, since the beams are incident at an angle less than the critical angle (optics), critical angle (the minimum angle for total internal reflection). Instead, the two faces are coated to provide mirror surfaces. The two opposite transmitting faces are often coated with an anti-reflective coating, antireflection coating to reduce spurious reflections. The fifth face of the prism is not used optically but truncates what would otherwise be an awkward angle joining the two mirrored faces. In c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instant Return Mirror
In photography, the single-lens reflex camera (SLR) is provided with a mirror to redirect light from the picture taking lens to the viewfinder prior to releasing the shutter for composing and focusing an image. When the shutter is released, the mirror swings up and away allowing the exposure of the photographic medium and instantly returns after the exposure. No SLR camera before 1954 had this feature, although the mirror on some early SLR cameras was entirely operated by the force exerted on the shutter release and only returned when the finger pressure was released. The Asahiflex II, released by Japanese company Asahi (Pentax) in 1954, was the world's first SLR camera with an instant return mirror.Michael R. Peres (2013)''The Focal Encyclopedia of Photography'', page 779 Taylor & Francis Taylor & Francis Group is an international company originating in the United Kingdom that publishes books and academic journals. Its parts include Taylor & Francis, CRC Press, Routledge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sears
Sears, Roebuck and Co., commonly known as Sears ( ), is an American chain of department stores and online retailer founded in 1892 by Richard Warren Sears and Alvah Curtis Roebuck and reincorporated in 1906 by Richard Sears and Julius Rosenwald, with what began as a mail-order catalog company migrating to opening retail locations in 1925, the first in Chicago. Through the 1980s, Sears was the largest retailer in the United States. In 2005, the company was bought by the management of the American big box discount chain Kmart, which upon completion of the merger, formed Sears Holdings. In 2018, it was the 31st-largest. After several years of declining sales, Sears' parent company filed for Chapter 11 bankruptcy on October 15, 2018. It announced on January 16, 2019, that it had won its bankruptcy auction, and that a reduced number of 425 stores would remain open, including 223 Sears stores. Sears was based in the Sears Tower in Chicago from 1973 until moving out to Ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nidec Copal Corporation
The , or Copal, is a Japanese manufacturer of optical, electronic and mechanical equipment, primarily for the photographic industry. It has been a subsidiary of Nidec Corporation since 1998, and was formerly known as the Copal Corporation. The company began operation in 1946, with small-scale production of photographic shutters; these are still one of the company's best-known products. In the 1960s the company began producing the well-known Copal Square vertically travelling metal blade focal plane shutter, which was very successful and was used in cameras by many prominent manufacturers. The ''Copal Square-S'', for example used in the Konica T3s (1973-1978) and the Nikkormat FT, is very reliable. It works over a wide temperature range. The electronically controlled Copal ''Square E'' (1968) was used in the Yashica TL Electro X, the Canon EF, the Nikkormat EL. For Minolta XE and the Leica R3 The Leica R3 was a 35mm SLR camera by Leica and the first model of their R s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mamiya
is a Japanese company that manufactures high-end cameras and other related photographic and optical equipment. With headquarters in Tokyo, it has two manufacturing plants and a workforce of over 200 people. The company was founded in May 1940 by camera designer Seiichi Mamiya () and financial backer Tsunejiro Sugawara. History Mamiya originally achieved fame for its professional medium-format rangefinder film cameras such as the Mamiya Six (1940) and the Mamiya Press (1962) series. It later developed medium-format industry workhorse single lens reflex cameras: RB67 (1970), RZ67 (1982), and 645 (1975); and twin-lens reflex C series, all of which were used by advanced amateur and professional photographers. Many Mamiya models over the past six decades have become collectors' items. The earliest Mamiya Six medium-format folding camera, the 35 mm Mamiya-Sekor 1000DTL, the lightweight 35 mm Mamiya NC1000, the 6×6 cm medium-format C series of interchangeab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Film Speed
Film speed is the measure of a photographic film's sensitivity to light, determined by sensitometry and measured on various numerical scales, the most recent being the ISO system introduced in 1974. A closely related system, also known as ISO, is used to describe the relationship between exposure and output image lightness in digital cameras. Prior to ISO, the most common systems were ASA in the United States and DIN in Europe. The term ''speed'' comes from the early days of photography. Photographic emulsions that were more sensitive to light needed less time to generate an acceptable image and thus a complete exposure could be finished faster, with the subjects having to hold still for a shorter length of time. Emulsions that were less sensitive were deemed "slower" as the time to complete an exposure was much longer and often usable only for still life photography. Exposure times for photographic emulsions shortened from hours to fractions of a second by the late 19th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aperture
In optics, the aperture of an optical system (including a system consisting of a single lens) is the hole or opening that primarily limits light propagated through the system. More specifically, the entrance pupil as the front side image of the aperture and focal length of an optical system determine the cone angle of a bundle of rays that comes to a focus in the image plane. An optical system typically has many structures that limit ray bundles (ray bundles are also known as ''pencils'' of light). These structures may be the edge of a lens or mirror, or a ring or other fixture that holds an optical element in place or may be a special element such as a diaphragm placed in the optical path to limit the light admitted by the system. In general, these structures are called stops, and the aperture stop is the stop that primarily determines the cone of rays that an optical system accepts (see entrance pupil). As a result, it also determines the ray cone angle and brightne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
135 Film
file:135film.jpg, 135 film. The film is wide. Each image is 24×36 mm in the most common "small film" format (sometimes called "double-frame" for its relationship to the "single-frame" 35 mm movie format or full frame after the introduction of 135 sized digital sensors; confusingly, "full frame" was also used to describe the Full frame (cinematography), full gate of the movie format half the size). file:LEI0060 186 Leica I Sn.5193 1927 Originalzustand Front-2 FS-15.jpg, Leica I, 1927, the first successful camera worldwide for 35 cine film 135 film, more popularly referred to as 35 mm film or 35 mm, is a format of photographic film with a film gauge of loaded into a standardized type of magazine (also referred to as a cassette or cartridge) for use in 135 film cameras. The term 135 was introduced by Kodak in 1934 as a designation for 35 mm film specifically for still photography, perforated with Kodak Standard perforations. It quickly grew in populari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
