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QBM
The Quick Bayonet Mount (QBM) is the bayonet mount system for the range of interchangeable lenses fitted to 135 film cameras built by Rollei in Germany and Singapore from 1970 through 1990, including the Rolleiflex SL35, Rolleiflex SL2000F, and Voigtländer VSL series. Lens brands sold with QBM included Carl Zeiss, Rolleinar, Schneider, and Voigtländer. QBM has a flange focal distance of 44.5 mm. Technical The 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 o ... ring should be set to its maximum position (smallest -number) before mounting on the camera. The depth-of-field preview should not be engaged during the mounting/dismounting process. List of QBM lenses ;Notes References External links * {{Rollei Lens mounts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolleiflex SL35
The Rolleiflex SL35 is a range of single-lens reflex, SLR cameras manufactured and sold by the German camera maker Rollei from 1970 to 1982. This range of cameras uses 35mm format, 35mm film. The camera bodies were initially made in Germany. After Zeiss Ikon discontinued camera production, Rollei acquired the Voigtländer brand and camera designs in 1972, and began producing a second generation of SLR cameras in Singapore starting from 1976. Some of those second-generation cameras were rebranded and marketed as Voigtländer VSL. The Rolleiflex SL35 line uses QBM (Quick Bayonet Mount) mount, with a flange focal distance of 44.5 mm. The QBM was re-used by Rollei for the Rolleiflex SL 2000 F (1981) and successor 3003 (1985), which were modular 135 film SLR cameras similar in concept and execution to contemporary Hasselblad V-system and Rolleiflex SL66/6006 cameras. History First generation cameras The Rolleiflex SL35 was a line of 35mm SLR cameras which were develope ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voigtländer VSL
The Rolleiflex SL35 is a range of SLR cameras manufactured and sold by the German camera maker Rollei from 1970 to 1982. This range of cameras uses 35mm film. The camera bodies were initially made in Germany. After Zeiss Ikon discontinued camera production, Rollei acquired the Voigtländer brand and camera designs in 1972, and began producing a second generation of SLR cameras in Singapore starting from 1976. Some of those second-generation cameras were rebranded and marketed as Voigtländer VSL. The Rolleiflex SL35 line uses QBM (Quick Bayonet Mount) mount, with a flange focal distance of 44.5 mm. The QBM was re-used by Rollei for the Rolleiflex SL 2000 F (1981) and successor 3003 (1985), which were modular 135 film SLR cameras similar in concept and execution to contemporary Hasselblad V-system and Rolleiflex SL66/6006 cameras. History First generation cameras The Rolleiflex SL35 was a line of 35mm SLR cameras which were developed and built by Rollei from the 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolleiflex SL2000F
The Rolleiflex SL2000F is a line of modular 135 film single lens reflex cameras (SLR) made by Rollei which share the QBM lens mount with the earlier Rolleiflex SL35 line, adding interchangeable film backs, similar in concept to contemporary medium format SLR systems including the Rolleiflex SL66 / SLX, Hasselblad V-System, and Mamiya RB67. The SL2000F was first announced at photokina in 1976, and released in 1981 after a prolonged development period. It was succeeded by the SL3003 (1984), which extended the fastest shutter speed from to sec., and SL3001 (1985), a simplified SL3003 which removed the waist-level finder and reverted to sec. History The prototype SL2000 was first exhibited at photokina '76, featuring both aperture- and shutter-priority autoexposure modes along with a top speed of sec. However, when it was released in February 1981 for Germany and selected other European countries, the shutter-priority mode had been dropped and the top speed reduced ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rollei
Rollei () is a German manufacturer of optical instruments founded in 1920 by and in Braunschweig, Lower Saxony, and maker of the Rolleiflex and Rolleicord series of cameras. Later products included specialty and nostalgic type films for the photo hobbyist market. Originally named ''Werkstatt für Feinmechanik und Optik, Franke & Heidecke'', the company renamed into ''Rollei-Werke Franke & Heidecke GmbH'' in 1972, ''Rollei-Werke Franke & Heidecke GmbH & Co. KG'', in 1979, and ''Rollei Fototechnic GmbH & Co. KG'' in 1981. After being purchased in 1995 by Samsung Techwin, part of the South Korean Samsung Group, it was sold back to its internal management in 1999. In 2002, it was bought by a Danish investment group, and renamed ''Rollei GmbH'' in 2004. In 2005/2006, the company headquarters moved to Berlin and the company was split into two different companies: ''Rollei GmbH'' in Berlin, owner of the Rollei brand and selling various OEM equipment, and ''Rollei Produktion GmbH'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schneider Kreuznach
Joseph Schneider Optische Werke GmbH (commonly referred to as Schneider) is a manufacturer of industrial and photographic optics. The company was founded on 18 January 1913 by Joseph Schneider as Optische Anstalt Jos. Schneider & Co. at Bad Kreuznach in Germany. The company changed its name to Jos. Schneider & Co., Optische Werke, Kreuznach in 1922, and to the current Jos. Schneider Optische Werke GmbH in 1998. In 2001, Schneider received an Academy Awards, Oscar for Technical Achievement for their Super-Cinelux motion picture lenses. It is best known as manufacturers of large format lenses for view cameras, enlarger lenses, and photographic loupes. It also makes a limited amount of 135 film, small- and Medium format (film), medium-format lenses, and has at various times manufactured eyeglasses and camera rangefinders, as well as being an OEM lens maker for Kodak and Samsung Electronics, Samsung digital cameras. It has supplied the lenses for various LG devices and the BlackBer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flange Focal Distance
For an interchangeable lens camera, the flange focal distance (FFD) (also known as the flange-to-film distance, flange focal depth, flange back distance (FBD), flange focal length (FFL), back focus or register, depending on the usage and source) of a lens mount system is the distance from the mounting flange (the interlocking metal rings on the camera and the rear of the lens) to the film or image sensor plane. This value is different for different camera systems. The range of this distance, which will render an image clearly in focus within all focal lengths, is usually measured to a precision of hundredths of millimetres, and is not to be confused with depth of field. Lenses can be adapted from one mount (and respective FFD) to another. FFD determines whether infinity focus can be accomplished with a simple non-optical adapter. Optics to correct for distance introduce more cost and can lower image quality, so non-optical lens adapters are preferred. A simple non-optical adap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikon F Mount
The Nikon F-mount is a type of interchangeable lens mount developed by Nikon for its 35mm format single-lens reflex cameras. The F-mount was first introduced on the Nikon F camera in 1959, and features a three-lug bayonet mount with a 44mm throat and a flange to focal plane distance of 46.5mm. The company continues, with the 2020 D6 model, to use variations of the same lens mount specification for its film and digital SLR cameras. The Nikon F-mount successor is the Nikon Z-mount. History The Nikon F-mount is one of only two SLR lens mounts (the other being the Pentax K-mount) which were not abandoned by their associated manufacturer upon the introduction of autofocus, but rather extended to meet new requirements related to metering, autofocus, and aperture control. The large variety of F-mount compatible lenses makes it the largest system of interchangeable flange-mount photographic lenses in history. Over 400 different Nikkor lenses are compatible with the system. The F- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentax K Mount
The Pentax K-mount, sometimes referred to as the "PK-mount", is a Bayonet mount, bayonet lens mount standard for mounting interchangeable photographic lenses to 135 film, 35 mm single-lens reflex (SLR) cameras. It was created by Pentax in 1975, and has since been used by all Pentax 135 film, 35 mm and digital Digital single-lens reflex camera, SLRs and also the Mirrorless interchangeable-lens camera, MILC Pentax K-01. A number of other manufacturers have also produced many K-mount lenses and K-mount cameras. Mounts The Pentax K-mount has undergone a number of evolutions over the years as new functionality has been added. In general, the term K-mount may refer to the original K-mount, or to all its variations. Originally designed by Carl Zeiss AG, Zeiss for an alliance with Pentax, it was intended to be a common lens mount for a proposed series of cameras and lenses. However, the plan failed to work out and the two firms parted company amicably, but Pentax retained t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minolta SR Mount
The Minolta SR-mount was the bayonet mounting system used in all 35 mm Single-lens reflex camera, SLR cameras made by Minolta with interchangeable manual focusing lenses. Several iterations of the mounting were produced over the decades, and as a result, the mount itself was sometimes referred to by the name of the corresponding lens generation (f.e. "MC", "MD" or "X-600") instead. Design Compatibility All lenses for these mounts are interchangeable between older and newer Minolta manual focus 35 mm film SLR bodies. There are exceptions, such as, the lenses before 1961 feature a slightly different aperture leverage, and thus the automatic diaphragm may not work correctly on post-1961 cameras, and later MC/MD tabs may hit a screw of the front cover on earlier cameras. Four design enhancements, all forwardly inclusive and backwardly compatible, are: # SR - 1958-1966: Plain SR-bayonet featuring automatic diaphragm. Lenses are labelled ''Rokkor'' (pre-set) or ''Auto Rokkor'' (automati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon FD Mount
The Canon FD lens mount is a physical standard for connecting a photographic lens to a 35mm single-lens reflex camera body. The standard was developed by Canon of Japan and was introduced in March 1971 with the Canon F-1 camera. It served as the Canon SLR interchangeable lens mounting system until the 1987 introduction of the Canon EOS series cameras, which use the newer EF lens mount. The FD mount lingered through the release of the 1990 Canon T60, the last camera introduced in the FD system, and the end of the Canon New F-1 product cycle in 1992. Overview The FD mount is mechanically compatible with and replaced Canon's earlier FL mount,which in turn had replaced the R mount; FD-mount cameras can use FL lenses in stop-down metering mode and R lenses will mount, but must be used with manual aperture and stop-down metering. Though never officially explained by Canon, others have attempted to assign a meaning to the "FD" designation. One such attempt states that the "FD" n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wide Angle Lens
In photography and cinematography, a wide-angle lens is a lens covering a large angle of view. Conversely, its focal length is substantially smaller than that of a normal lens for a given film plane. This type of lens allows more of the scene to be included in the photograph, which is useful in architectural, interior, and landscape photography where the photographer may not be able to move farther from the scene to photograph it. Another use is where the photographer wishes to emphasize the difference in size or distance between objects in the foreground and the background; nearby objects appear very large and objects at a moderate distance appear small and far away. This exaggeration of relative size can be used to make foreground objects more prominent and striking, while capturing expansive backgrounds. A wide-angle lens is also one that projects a substantially larger image circle than would be typical for a standard design lens of the same focal length. This large image ci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoom Lens
A zoom lens is a system of camera lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed-focal-length (FFL) lens (''prime lens''). A true zoom lens or optical zoom lens is a type of '' parfocal lens'', one that maintains focus when its focal length changes. Most consumer zoom lenses do not maintain perfect focus, but are still nearly parfocal. Most camera phones that are advertised as having optical zoom actually use a few cameras of different but fixed focal length, combined with digital zoom to make a hybrid system. The convenience of variable focal length comes at the cost of complexity – and some compromises on image quality, weight, dimensions, aperture, autofocus performance, and cost. For example, all zoom lenses suffer from at least slight, if not considerable, loss of image resolution at their maximum aperture, especially at the extremes of their focal length range. This effect is evident in the corners of the image ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
