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MD Rokkor
Rokkor was a brand name used for all Chiyoda Kōgaku Seikō and later Minolta lenses between 1940 and 1980, including a few, which were marketed and sold by other companies like Leica. The name was derived from the name of Rokkō (六甲山), a 932 metre (3058') high mountain, which could be seen from the company's glass-making and optics factory at Mukogawa near Osaka, Japan. The company's founder wanted the name to symbolize the high quality in optics. Overview The first lens to carry the Rokkor designation was a 200mm 4.5 lens that came with the hand-holdable aerial camera Chiyoda SK-100 in 1940. After the Rokkor name was dropped and no longer engraved in new lenses after 1980/1981, the Rokkor name resurfaced two times. As was revealed not before 2006, the Rokkor name was still used internally for prototypes of a never released SR-mount '' Minolta MD Apo Tele Rokkor 300mm 2.8'' manual-focus lens in the early 1980s, a lens design, which later saw life as the A-mount '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minolta Rokkor Teleobjektive
was a Japanese manufacturer of cameras, camera accessories, photocopiers, fax machines, and laser printers. Minolta Co., Ltd., which is also known simply as Minolta, was founded in Osaka, Japan, in 1928 as . It made the first integrated autofocus 35 mm SLR camera system. In 1931, the company adopted its final name, an acronym for "Mechanism, Instruments, Optics, and Lenses by Tashima". In 2003, Minolta merged with Konica to form Konica Minolta. On 19 January 2006, Konica Minolta announced that it was leaving the camera and photo business, and that it would sell a portion of its SLR camera business to Sony as part of its move to pull completely out of the business of selling cameras and photographic film. History Milestones *1928: establishes Nichi-Doku Shashinki Shōten ("Japanese-German photo company," the precursor of Minolta Co., Ltd.). *1929: Marketed the company's first camera, the "Nifcarette" (ニフカレッテ). *1937: The Minolta Flex is Japan's second twin- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sony
, commonly stylized as SONY, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan. As a major technology company, it operates as one of the world's largest manufacturers of consumer and professional electronic products, the largest video game console company and the largest video game publisher. Through Sony Entertainment Inc, it is one of the largest music companies (largest music publisher and second largest record label) and the third largest film studio, making it one of the most comprehensive media companies. It is the largest technology and media conglomerate in Japan. It is also recognized as the most cash-rich Japanese company, with net cash reserves of ¥2 trillion. Sony, with its 55 percent market share in the image sensor market, is the largest manufacturer of image sensors, the second largest camera manufacturer, and is among the semiconductor sales leaders. It is the world's largest player in the premium TV market for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microfiche
Microforms are scaled-down reproductions of documents, typically either films or paper, made for the purposes of transmission, storage, reading, and printing. Microform images are commonly reduced to about 4% or of the original document size. For special purposes, greater optical reductions may be used. Three formats are common: microfilm (reels), microfiche (flat sheets), and aperture cards. Microcards, also known as "micro-opaques", a format no longer produced, were similar to microfiche, but printed on cardboard rather than photographic film. History Using the daguerreotype process, John Benjamin Dancer was one of the first to produce microphotographs, in 1839. He achieved a reduction ratio of 160:1. Dancer refined his reduction procedures with Frederick Scott Archer's wet collodion process, developed in 1850–51, but he dismissed his decades-long work on microphotographs as a personal hobby and did not document his procedures. The idea that microphotography could be no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fax Machine
Fax (short for facsimile), sometimes called telecopying or telefax (the latter short for telefacsimile), is the telephonic transmission of scanned printed material (both text and images), normally to a telephone number connected to a printer or other output device. The original document is scanned with a fax machine (or a telecopier), which processes the contents (text or images) as a single fixed graphic image, converting it into a bitmap, and then transmitting it through the telephone system in the form of audio-frequency tones. The receiving fax machine interprets the tones and reconstructs the image, printing a paper copy. Early systems used direct conversions of image darkness to audio tone in a continuous or analog manner. Since the 1980s, most machines modulate the transmitted audio frequencies using a digital representation of the page which is compressed to quickly transmit areas which are all-white or all-black. Fax machines were ubiquitous in office environments in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Color Enlarger
An enlarger is a specialized transparency projector used to produce photographic prints from film or glass negatives, or from transparencies. Construction All enlargers consist of a light source, normally an incandescent light bulb shining though a condenser or translucent screen to provide even illumination, a holder for the negative or transparency, and a specialized lens for projection. The light passes through a film holder, which holds the exposed and developed photographic negative or transparency. Prints made with an enlarger are called ''enlargements''. Typically, enlargers are used in a darkroom, an enclosed space from which extraneous light may be excluded; some commercial enlargers have an integral dark box so that they can be used in a light-filled room. History Josef Maria Eder, in his ''History of Photography'' attributes the invention of photographic enlargement to Humphry Davy who realised the idea of using a solar microscope to project images onto sensitise ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enlarger
An enlarger is a specialized transparency projector used to produce photographic prints from film or glass negatives, or from transparencies. Construction All enlargers consist of a light source, normally an incandescent light bulb shining though a condenser or translucent screen to provide even illumination, a holder for the negative or transparency, and a specialized lens for projection. The light passes through a film holder, which holds the exposed and developed photographic negative or transparency. Prints made with an enlarger are called ''enlargements''. Typically, enlargers are used in a darkroom, an enclosed space from which extraneous light may be excluded; some commercial enlargers have an integral dark box so that they can be used in a light-filled room. History Josef Maria Eder, in his ''History of Photography'' attributes the invention of photographic enlargement to Humphry Davy who realised the idea of using a solar microscope to project images onto sensitis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minolta α
The Minolta A-mount camera system was a line of photographic equipment from Minolta introduced in 1985 with the world's first integrated autofocus system in the camera body with interchangeable lenses. The system used a lens mount called A-mount, with a flange focal distance 44.50 mm, one millimeter longer, 43.5 mm, than the previous SR mount from 1958. The new mount was wider, 49.7 mm vs. 44.97 mm, than the older SR-mount and had a longer flange focal distance making old manual lenses incompatible with the new system. Minolta bought the autofocus technology of Leica Correfot camera which was partly used on the a-mount autofocus technology. The mount is now used by Sony, who bought the SLR camera division from Konica Minolta, Konica and Minolta having merged a few years before. The Minolta A-mount system was at first marketed as Maxxum in North America and α (Alpha) in Japan and the rest of Asia. In Europe, early Minolta A-mount cameras were initially identi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minolta Dynax
The Minolta A-mount camera system was a line of photographic equipment from Minolta introduced in 1985 with the world's first integrated autofocus system in the camera body with interchangeable lenses. The system used a lens mount called A-mount, with a flange focal distance 44.50 mm, one millimeter longer, 43.5 mm, than the previous SR mount from 1958. The new mount was wider, 49.7 mm vs. 44.97 mm, than the older SR-mount and had a longer flange focal distance making old manual lenses incompatible with the new system. Minolta bought the autofocus technology of Leica Correfot camera which was partly used on the a-mount autofocus technology. The mount is now used by Sony, who bought the SLR camera division from Konica Minolta, Konica and Minolta having merged a few years before. The Minolta A-mount system was at first marketed as Maxxum in North America and α (Alpha) in Japan and the rest of Asia. In Europe, early Minolta A-mount cameras were initially ident ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AF (Minolta Lens Designation)
Minolta and its successor Konica Minolta released the following lenses for Minolta A-mount cameras between 1985 and 2006. History While most auto-focus lens designs were new developments, some optical constructions were derived from Minolta SR-mount lenses (as indicated). In the United States, the Maxxum system launched in 1985 with twelve lenses: * 24mm 2.8 * 28mm 2.8 * 50mm 1.4 * 50mm 1.7 * 50mm 2.8 Macro * 135mm 2.8 * 300mm 2.8 APO * 28–85mm 3.5–4.5 * 28–135mm 4–4.5 * 35–70mm 4 * 35–105mm 3.5–4.5 * 70–210mm 4 Initially, the lenses were equipped with narrow ribbed manual focus rings in hard plastic near the front; zoom lenses had a diagonally-ribbed rubber grip. Later lenses changed the grip style and added a rubber coating to the focus ring. Some of the original lenses were re-released with updated cosmetics and are known as "New" or "Restyled" versions; minor optical updates such as coatings and aper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minolta Maxxum
The Minolta A-mount camera system was a line of photographic equipment from Minolta introduced in 1985 with the world's first integrated autofocus system in the camera body with interchangeable lenses. The system used a lens mount called A-mount, with a flange focal distance 44.50 mm, one millimeter longer, 43.5 mm, than the previous SR mount from 1958. The new mount was wider, 49.7 mm vs. 44.97 mm, than the older SR-mount and had a longer flange focal distance making old manual lenses incompatible with the new system. Minolta bought the autofocus technology of Leica Correfot camera which was partly used on the a-mount autofocus technology. The mount is now used by Sony, who bought the SLR camera division from Konica Minolta, Konica and Minolta having merged a few years before. The Minolta A-mount system was at first marketed as Maxxum in North America and α (Alpha) in Japan and the rest of Asia. In Europe, early Minolta A-mount cameras were initially ident ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maxxum AF (Minolta Lens Designation)
Minolta and its successor Konica Minolta released the following lenses for Minolta A-mount cameras between 1985 and 2006. History While most auto-focus lens designs were new developments, some optical constructions were derived from Minolta SR-mount lenses (as indicated). In the United States, the Maxxum system launched in 1985 with twelve lenses: * 24mm 2.8 * 28mm 2.8 * 50mm 1.4 * 50mm 1.7 * 50mm 2.8 Macro * 135mm 2.8 * 300mm 2.8 APO * 28–85mm 3.5–4.5 * 28–135mm 4–4.5 * 35–70mm 4 * 35–105mm 3.5–4.5 * 70–210mm 4 Initially, the lenses were equipped with narrow ribbed manual focus rings in hard plastic near the front; zoom lenses had a diagonally-ribbed rubber grip. Later lenses changed the grip style and added a rubber coating to the focus ring. Some of the original lenses were re-released with updated cosmetics and are known as "New" or "Restyled" versions; minor optical updates such as coatings and aper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rokinon
Samyang Optics is a South Korean manufacturer of camera lenses for several major brands of third-party mounts for still photography and video cameras. The company was founded in 1972 and has about 150 employees. Samyang exports to 58 countries through 39 overseas agents and distributors. Samyang products are also sold under a wide variety of different brand names. Some examples are Rokinon, Bower, Opteka, Vivitar, Phoenix and Quantaray. Products Autofocus lenses Autofocus lenses: For Canon EF Mount: * AF 14 mm 2.8 EF * AF 85 mm 1.4 EF For Canon RF Mount: * AF 14 mm 2.8 RF * AF 85 mm 1.4 RF For Sony E-Mount: * AF 14 mm 2.8 FE * AF 18 mm 2.8 FE * AF 24 mm 2.8 FE * AF 35 mm 1.4 FE * AF 35 mm 1.8 FE * AF 35 mm 2.8 FE * AF 45 mm 1.8 FE * AF 50 mm 1.4 FE * AF 75 mm 1.8 FE * AF 85 mm 1.4 FE *AF 24-70mm 2.8 FE For Nikon F Mount: * AF 14 mm 2.8 F * AF 85 mm 1.4 F Manual focus len ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
