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K. G. Corfield Ltd
K. G. Corfield Ltd was an innovative camera and lens manufacturing company based in Wolverhampton. The company produced high quality cameras and lenses basing many design features on the Leica range of 35mm cameras. One unique design was employed in the ''Periflex'' series of cameras which utilised a novel periscope viewing system to achieve fine focus. A miniature periscope descended into the optical path of the lens when the film was advanced. This provided a much enlarged view of the central area of the film frame. When the shutter was released, the periscope sprung vertically up out of the optical path and then the horizontal cloth focal plane shutter operated. The company also produced other photographic equipment including the ''Lumimeter'', an exposure meter for use in the darkroom based on the comparison between reflected light from the enlarger and a variable transmitted light from the meter observed in a split screen. When both sides were equally lit, the dial controllin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camera
A camera is an Optics, optical instrument that can capture an image. Most cameras can capture 2D images, with some more advanced models being able to capture 3D images. At a basic level, most cameras consist of sealed boxes (the camera body), with a small hole (the aperture) that allows light to pass through in order to capture an image on a light-sensitive surface (usually a Image sensor, digital sensor or photographic film). Cameras have various mechanisms to control how the light falls onto the light-sensitive surface. Lenses focus the light entering the camera, and the aperture can be narrowed or widened. A Shutter (photography), shutter mechanism determines the amount of time the photosensitive surface is exposed to the light. The still image camera is the main instrument in the art of photography. Captured images may be reproduced later as part of the process of photography, digital imaging, or photographic printing. Similar artistic fields in the moving-image camera dom ... [...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] |
Wolverhampton
Wolverhampton () is a city, metropolitan borough and administrative centre in the West Midlands, England. The population size has increased by 5.7%, from around 249,500 in 2011 to 263,700 in 2021. People from the city are called "Wulfrunians". Historically part of Staffordshire, the city grew initially as a market town specialising in the wool trade. In the Industrial Revolution, it became a major centre for coal mining, steel production, lock making, and the manufacture of cars and motorcycles. The economy of the city is still based on engineering, including a large aerospace industry, as well as the service sector. Toponym The city is named after Wulfrun, who founded the town in 985, from the Anglo-Saxon ''Wulfrūnehēantūn'' ("Wulfrūn's high or principal enclosure or farm"). Before the Norman Conquest, the area's name appears only as variants of ''Heantune'' or ''Hamtun'', the prefix ''Wulfrun'' or similar appearing in 1070 and thereafter. Alternatively, the city ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leica Camera
Leica Camera AG () is a German company that manufactures cameras, optical lenses, photographic lenses, binoculars, Telescopic sight, rifle scopes and microscopes. The company was founded by Ernst Leitz in 1869 (Ernst Leitz Wetzlar), in Wetzlar, Germany. In 1986, the Leitz company changed its name to Leica, due to the fame of the Leica trade-name. The name Leica is derived from the first three letters of the founder's surname (Leitz) and the first two of the word camera: lei-ca (LEItz CAmera). At this time, Leica relocated its factory from Wetzlar to the nearby town of Solms. Leica Camera AG is 55% owned by Austrian investment firm ACM Projektentwicklung GmbH, and 45% owned by The Blackstone Group which licenses the Leica brand name from the Danaher Corporation-owned Leica Microsystems GmbH. History From the year 1907 to the 1950s, the buildings that formed Leica factory were built on Ernst Leitz Street in Wetzlar, and remained until 1986, when the factory was moved to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periscope
A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer's current position. In its simplest form, it consists of an outer case with mirrors at each end set parallel to each other at a 45° angle. This form of periscope, with the addition of two simple lenses, served for observation purposes in the trenches during World War I. Military personnel also use periscopes in some gun turrets and in armoured vehicles. More complex periscopes using prisms or advanced fiber optics instead of mirrors and providing magnification operate on submarines and in various fields of science. The overall design of the classical submarine periscope is very simple: two telescopes pointed into each other. If the two telescopes have different individual magnification, the difference between them causes an overall magnification or reduction. Early examples Johannes Hevelius described an early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focal Plane Shutter
In camera design, a focal-plane shutter (FPS) is a type of photographic shutter that is positioned immediately in front of the focal plane of the camera, that is, right in front of the photographic film or image sensor. Two-curtain shutters The traditional type of focal-plane shutter in 35 mm cameras, pioneered by Leitz for use in its Leica cameras, uses two shutter curtains, made of opaque rubberised fabric, that run horizontally across the film plane. For slower shutter speeds, the first curtain opens (usually) from right to left, and after the required time with the shutter open, the second curtain closes the aperture in the same direction. When the shutter is cocked again the shutter curtains are moved back to their starting positions, ready to be released. Focal-plane shutter at low speed ''Figure 1:'' The black rectangle represents the frame aperture through which the exposure is made. It is currently covered by the first shutter curtain, shown in red. The sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kenneth Corfield
Sir Kenneth George Corfield (27 January 1924 – 11 January 2016) was a British camera engineer and industrialist. Born in Rushall near Walsall, Corfield attended the South Staffordshire College of Advanced Technology and worked in management development in ICI's Metals division from 1946 until 1950, when with his brother John he established K. G. Corfield Ltd in Wolverhampton. The company first made accessories for photographers, then launched the Periflex camera in 1953; it also imported Exacta Varex and Minox cameras from East Germany. After a majority holding in the company was bought by Guinness in the early 1960s, he led the expansion of Parkinson Cowan, a maker of gas meters and gas appliances. In 1966 he moved to American company ITT, becoming managing director of their British subsidiary Standard Telephones and Cables in 1969 and then executive chairman from 1979. Here he followed an ambitious expansion strategy, including in 1984 the ill-fated acquisition of computer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballymoney
Ballymoney ( ga, Baile Monaidh , meaning 'townland of the moor') is a small town and civil parish in County Antrim, Northern Ireland. It is within the Causeway Coast and Glens Borough Council area. The civil parish of Ballymoney is situated in the historic baronies of Dunluce Upper and Kilconway in County Antrim, as well as the barony of North East Liberties of Coleraine in County Londonderry. It had a population of 10,402 people at the 2011 Census. Ballymoney is located on the main road between Coleraine and Ballymena, with good road and rail connections to the main cities in Northern Ireland, Belfast and Derry. The Ballymoney area has the highest life expectancy of any area in Northern Ireland, with the average male life expectancy at birth being 79.9 years and 83.8 years for females in years between 2010 and 2012. Conversely, it was revealed in 2013 that Ballymoney residents are more likely to die from heart disease than anywhere else in Northern Ireland. The town hosts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gandolfi Camera
A field camera is a view camera that can be folded in a compact size. Modern designs are little different from the first folding field cameras from the 19th century. In general they have more limited camera movements than monorail cameras, but when folded are relatively compact and portable. Modern field cameras originate from the early interlocking box cameras of the 19th century. Rather than the wooden box used in 19th-century cameras, modern models substitute bellows to reduce the bulk of the cameras and make them easier to use outside the studio. Although they have less flexibility than monorail cameras, modern field cameras tend to have most camera movements for the front standard, i.e. lens rise/fall/shift/tilt/swing, but are usually more limited in back movements, sometimes having only tilt/swing. They usually use sheet film, in sizes from 6x9cm (2.4×3.6") to 20×24 inches (e.g., the Polaroid 20×24 camera), but the most popular "standard" sizes are 4×5 and 8×10 i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corfield Periflex
The Periflex 35mm camera was launched by K. G. Corfield Ltd, England in May 1953 as the first and original model from this source. The camera resembles the Leica Standard and qualifies fully as a Leica copy. However, film loading is by way of a removable back, and it provides through the lens visual focusing using an inverted periscope to be lowered into the light path between the lens and the film, utilising the single-lens reflex principle, showing a small section from the lower middle of the full image. The Periflex became quite popular in Britain and several improved models were introduced during the ensuing years until their demise in the early 1960s. Description The body is made of black painted metal alloy castings, while the top and base-plates are of black anodised stamped aluminium with delicate engravings. The covering material of the first two hundred units or so were brown pigskin, while all later ones were finished in black leather cloth because the pig skin stained ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prestolite Electric
Prestolite Electric Incorporated is a global manufacturer and supplier of alternators, starters, electrical equipment, and services to the transportation, industrial, military, marine, agricultural and construction industries. The company sells its products to United States defense agencies, OEMs, and aftermarket suppliers under the Indiel, Leece-Neville, and Prestolite Electric brand names. The company operates production and engineering facilities in China, Europe and the United States. Prestolite Electric is privately owned by Broad Ocean Motors. History The Prestolite name The following companies have been spun off under the Prestolite name and are no longer controlled by Prestolite Electric: *Prestolite (spark plugs) "Autolite" name sold in 1961 to the Ford Motor Company (who in turn is forced to sell it to Bendix by the early 1970s). *Prestolite Welding Equipment, formally Hobart Brothers of Troy, Ohio. *Prestolite Wire, division was sold in 1985. *Prestolite Battery sol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cameras
A camera is an optical instrument that can capture an image. Most cameras can capture 2D images, with some more advanced models being able to capture 3D images. At a basic level, most cameras consist of sealed boxes (the camera body), with a small hole (the aperture) that allows light to pass through in order to capture an image on a light-sensitive surface (usually a digital sensor or photographic film). Cameras have various mechanisms to control how the light falls onto the light-sensitive surface. Lenses focus the light entering the camera, and the aperture can be narrowed or widened. A shutter mechanism determines the amount of time the photosensitive surface is exposed to the light. The still image camera is the main instrument in the art of photography. Captured images may be reproduced later as part of the process of photography, digital imaging, or photographic printing. Similar artistic fields in the moving-image camera domain are film, videography, and cinematograph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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