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Canon T80
The Canon T80 is Canon's first autofocus 35mm single-lens reflex camera. It was introduced in April 1985 and discontinued in June 1986 and is part of the T series of FD mount cameras. It is not compatible with Canon's later EOS system and its autofocus EF-mount lenses. Three special lenses, designated ''AC'', were produced specifically for the camera. Other FD-mount lenses can also be used, but without autofocus capabilities. Autofocus The autofocus system in the T80 works in the same manner as the focus assist system built into the earlier AL-1. A linear CCD is used to detect contrast in the focus area. When this area has the maximum contrast, the lens is in focus. This is a similar mechanism to that used in compact digital cameras. When a manual focus lens is used, the camera provides focus assistance in exactly the same manner as the AL-1. The autofocus lenses contain a motor, and electrical contacts in the lens mount connect this motor to the camera's circuits. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon T80 Top
Canon or Canons may refer to: Arts and entertainment * Canon (fiction), the conceptual material accepted as official in a fictional universe by its fan base * Literary canon, an accepted body of works considered as high culture ** Western canon, the body of high culture literature, music, philosophy, and works of art that is highly valued in the West * Canon of proportions, a formally codified set of criteria deemed mandatory for a particular artistic style of figurative art * Canon (music), a type of composition * Canon (hymnography), a type of hymn used in Eastern Orthodox Christianity. * Canon (album), ''Canon'' (album), a 2007 album by Ani DiFranco * Canon (film), ''Canon'' (film), a 1964 Canadian animated short * Canon (game), ''Canon'' (game), an online browser-based strategy war game * Canon (manga), ''Canon'' (manga), by Nikki * Shakespeare's plays#Canonical plays, Canonical plays of William Shakespeare * The Canon (Natalie Angier book), ''The Canon'' (Natalie Angier b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focus Assistance
Focus, or its plural form foci may refer to: Arts * Focus or Focus Festival, former name of the Adelaide Fringe arts festival in South Australia Film *''Focus'', a 1962 TV film starring James Whitmore * ''Focus'' (2001 film), a 2001 film based on the Arthur Miller novel * ''Focus'' (2015 film), a 2015 film about con artists Music * Focus (music), a musical technique also known as modal frame * Focus..., American music producer * Focus (band), Dutch progressive rock band Albums * ''Focus'' (Stan Getz album), 1961 jazz album * ''Focus'' (Bill Hardman album), 1984 jazz album * ''Focus'' (Jan Akkerman & Thijs van Leer album), 1985 * ''Focus'' (Cynic album), 1993 metal album * ''Focus'' (Chico Freeman album), 1994 jazz album * ''Focus'' (Souls of Mischief album), 1998 alternative hip-hop album * ''Focus'' (Holly Starr album), 2012 CCM album * ''Focus'' (Arthur Blythe album), 2002 jazz album * ''Focus'' (Diaura album), 2013 Japanese visual kei album Songs * "Focus" (Ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon T90
The Canon T90, introduced in 1986, was the top of the line in Canon's '' T series'' of 35 mm Single-lens reflex (SLR) cameras. It is the last professional-level manual-focus camera from Canon, and the last professional camera to use the Canon FD lens mount. Although it was overtaken by the autofocus revolution and Canon's new, incompatible EOS (Electro-Optical System) after only a year in production, the T90 pioneered many concepts seen in high-end Canon cameras up to the present day, particularly the user interface, industrial design, and the high level of automation. Due to its ruggedness, the T90 was nicknamed "the tank" by Japanese photojournalists. Many have still rated it highly even 30+ years after its introduction. Design Previous Canon cameras had been wholly in-house design projects. For the T90, Canon brought in German industrial designer Luigi Colani in a collaboration with Canon's own designers. The final design was composed of Colani's ideas by Kunihisa Ito ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikon
(, ; ), also known just as Nikon, is a Japanese multinational corporation headquartered in Tokyo, Japan, specializing in optics and imaging products. The companies held by Nikon form the Nikon Group. Nikon's products include cameras, camera lenses, binoculars, microscopes, ophthalmic lenses, measurement instruments, rifle scopes, spotting scopes, and the steppers used in the photolithography steps of semiconductor fabrication, of which it is the world's second largest manufacturer. The company is the eighth-largest chip equipment maker as reported in 2017. Also, it has diversified into new areas like 3D printing and regenerative medicine to compensate for the shrinking digital camera market. Among Nikon's many notable product lines are Nikkor imaging lenses (for F-mount cameras, large format photography, photographic enlargers, and other applications), the Nikon F-series of 35 mm film SLR cameras, the Nikon D-series of digital SLR cameras, the Nikon Z-series of digital mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon New FD 35-70 Mm F/4 AF
The Canon FD 35-70mm 4 AF lens, released in 1981, was Canon's first attempt at adding autofocus capability to their range of single-lens reflex cameras. Canon took their existing, successful Canon FD 35-70mm f/4 lens and added a box above the lens which housed a self-contained autofocus mechanism, Canon's SST (Solid State Triangulation) system, as used in the AF35ML compact camera earlier that year. This lens provided autofocus capability when fitted to any Canon FD-mount camera—it did not require any capabilities in the camera body. The photographer simply pushed a button on the lens for it to focus automatically. Canon used a similar autofocus system for the FD mount Canon T80 of 1985, which had a range of three lenses with integral autofocus electronics and motors. However, the T80's lenses could only autofocus when mounted on the T80. Canon abandoned further development of autofocus for the FD mount in favour of the totally new and incompatible Canon EOS Canon EOS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minolta
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] |
AAA Batteries
The AAA battery (or triple-A battery) is a standard size of dry cell battery. One or more AAA batteries are commonly used in low-drain portable electronic devices. A zinc–carbon battery in this size is designated by IEC as R03, by ANSI C18.1 as 24, by old JIS standard as UM-4, and by other manufacturer and national standard designations that vary depending on the cell chemistry. The size was first introduced by The American Ever Ready Company in 1911. An AAA battery is a single cell that measures in diameter and in length, including the positive terminal button, which is a minimum . The positive terminal has a maximum diameter of ; the flat negative terminal has a minimum diameter of . Alkaline AAA batteries weigh around , while primary lithium AAA batteries weigh about . Rechargeable nickel–metal hydride (NiMH) AAA batteries typically weigh . Use AAA batteries are most often used in small electronic devices, such as TV remote controls, MP3 players and digital camer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liquid Crystal Display
A liquid-crystal display (LCD) is a flat panel display, flat-panel display or other Electro-optic modulator, electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers. Liquid crystals do not emit light directly but instead use a backlight or reflector (photography), reflector to produce images in color or monochrome monitor, monochrome. LCDs are available to display arbitrary images (as in a general-purpose computer display) or fixed images with low information content, which can be displayed or hidden. For instance: preset words, digits, and seven-segment displays, as in a digital clock, are all good examples of devices with these displays. They use the same basic technology, except that arbitrary images are made from a matrix of small pixels, while other displays have larger elements. LCDs can either be normally on (positive) or off (negative), depending on the polarizer arrangement. For example, a character ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Depth Of Field
The depth of field (DOF) is the distance between the nearest and the furthest objects that are in acceptably sharp focus in an image captured with a camera. Factors affecting depth of field For cameras that can only focus on one object distance at a time, depth of field is the distance between the nearest and the farthest objects that are in acceptably sharp focus. "Acceptably sharp focus" is defined using a property called the "circle of confusion". The depth of field can be determined by focal length, distance to subject, the acceptable circle of confusion size, and aperture. Limitations of depth of field can sometimes be overcome with various techniques and equipment. The approximate depth of field can be given by: : \text \approx \frac for a given circle of confusion (c), focal length (f), f-number (N), and distance to subject (u). As distance or the size of the acceptable circle of confusion increases, the depth of field increases; however, increasing the size of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon T70
The Canon T70 was a 35mm FD-mount single-lens reflex camera introduced in April 1984 as the second in Canon's T series. The T70 started with the concepts explored in 1983's T50, took them further, and applied them to a more sophisticated camera. While the Program AE-only T50 was intended as a beginner's camera, the T70 gave the photographer a lot more control over the camera's operation while keeping the T-series philosophy of simplicity in control and operation intact. Camera features Power All film transport on the T70 was powered—loading, advance and rewind. The continuous shooting rate, at 0.7 frames per second, was slower than rival motor drives, but the drive was nonetheless faster than most people could manually wind. To load the camera, the photographer simply had to pull the film leader out to an orange mark and close the back—the camera did the rest, loading the leader onto the spool, and advancing to the first frame automatically. All powered camera func ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Camera
A digital camera is a camera that captures photographs in digital memory. Most cameras produced today are digital, largely replacing those that capture images on photographic film. Digital cameras are now widely incorporated into mobile devices like smartphones with the same or more capabilities and features of dedicated cameras (which are still available). High-end, high-definition dedicated cameras are still commonly used by professionals and those who desire to take higher-quality photographs. Digital and digital movie cameras share an optical system, typically using a lens with a variable diaphragm to focus light onto an image pickup device. The diaphragm and shutter admit a controlled amount of light to the image, just as with film, but the image pickup device is electronic rather than chemical. However, unlike film cameras, digital cameras can display images on a screen immediately after being recorded, and store and delete images from memory. Many digital cameras can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon Inc
is a Japanese multinational corporation headquartered in Ōta, Tokyo, Japan, specializing in optical, imaging, and industrial products, such as lenses, cameras, medical equipment, scanners, printers, and semiconductor manufacturing equipment.Corporate Profile " ''Canon''. Retrieved on 13 January 2009. Canon has a primary listing on the and is a constituent of the Core30 and index. It has a secondary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
