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Canon Extender EF
The Canon Extender EF lenses are a group of teleconverter lenses made by Canon. These lenses are used between any compatible EF type lens and any of the Canon EOS line of cameras. When used with a compatible lens, they will multiply the focal length of the lens by a factor of either 1.4x or 2x, at the cost of decreasing the lens' aperture by 1 or 2 stops respectively. For example, using a 1.4x or 2x extender with the Canon EF 500mm f/4L IS USM would result in a 700mm f/5.6 or 1000mm f/8 lens. Overview Canon has released six models: * 1.4x (1988) * 1.4x II (2001) * 1.4x III (2010) * 2x (1987) * 2x II (2001) * 2x III (2010) Technical information The extenders are constructed with metal bayonets, and engineered plastic ends. There are no moving parts, other than the lens latch lock. Three generations of the extenders exist: the older 1.4× and 2×, the 1.4× II and 2× II, and the 1.4× III and 2.0× III. The II versions have weather-sealing and anti-reflective surfaces in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon Extender EF 1
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] |
Yes Check
Yes or YES may refer to: * An affirmative particle in the English language; see yes and no Education * YES Prep Public Schools, Houston, Texas, US * YES (Your Extraordinary Saturday), a learning program from the Minnesota Institute for Talented Youth * Young Eisner Scholars, in Los Angeles, New York City, Chicago, and Appalachia, US * Young Epidemiology Scholars, US Technology * yes (Unix), command to output "y" or a string repeatedly * Philips :YES, a 1985 home computer * Yes! Roadster, a German sports car Transportation * Yasuj Airport, Iran, IATA airport code * YES Airways, later OLT Express, Poland Organization * Yale Entrepreneurial Society, US * YES Snowboards * The YES! Association, a Swedish artist collective * Yes! Youth Movement, Russia * Young European Socialists formally ECOSY * Youth Empowerment Scheme, a children's charity, Belfast, Northern Ireland * Youth Energy Squad (Y.E.S) * YES (Lithuanian political party) Literature * ''Yes!'' (Hong Kong magazine) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon TS-E 17mm Lens
The Canon TS-E 17 mm 4L is a tilt-shift, ultra-wide-angle prime lens that provides the equivalent of the corresponding view camera front movements on Canon EOS camera bodies. Unlike most other EF-mount lenses, it does not provide autofocus. Overview The TS-E 17 mm 4L provides four degrees of freedom, allowing ±6.5° tilt with respect to the film or sensor plane and ±12 mm shift with respect to the center of the image area; each movement can be rotated ±90° about the lens axis. Shifting allows adjusting the position of the subject in the image area without moving the camera back; it is often used to avoid convergence of parallel lines, such as when photographing a tall building. Tilting the lens relies on the Scheimpflug principle to rotate the plane of focus away from parallel to the image plane; this can be used either to have all parts of an inclined subject sharply rendered, or to restrict sharpness to a small part of a scene. Tilting the lens results in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon EF 200–400mm Lens
The EF 200–400 mm 4L IS USM Extender 1.4× is an EF mount telephoto lens, super telephoto zoom lens produced by Canon Inc., Canon. It is part of the professional Canon L lens, L-series and functions with the Canon EOS line of cameras. The EF 200–400 mm lens features an ultrasonic motor, image stabilization and weather sealing. It is the first and only EF lens with a built-in Teleconverter, extender. History The EF 200–400 mm 4L was first announced to be in development in February 2011 and a prototype was showcased at the 2011 CP+ tradeshow. In November 2011, Canon announced that availability of the lens would be postponed to an unspecified later date. The lens was only released more than a year later in May 2013. Built-in 1.4× Extender Although not the first lens to be equipped with a built-in teleconverter, an honor that belongs to the older Canon FD mount 1200 mm 5.6L 1.4× lens, the EF 200–400 is the first to be for the EF mount, and the first to ent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon EF 100-400mm Lens
The EF 100–400 mm 4.5–5.6L IS USM is a professional EF mount telephoto zoom lens manufactured by Canon Inc. The first version of this lens was announced in September 1998, and an updated version was announced in November 2014. It is a high performance telephoto lens most often used for sports and wildlife photography. Crop factor When used with a Canon APS-C (1.6× crop) DSLR camera or APS-H (1.3× crop), the field of view of this lens is equivalent to a 160–640 mm on an APS-C sensor, or 130–520 mm on an APS-H sensor. This is due to the crop factor inherent with APS-C or APS-H sensor digital SLR cameras. First version While the original version has excellent optical performance, its design predated the mass-market availability of digital single-lens reflex camera A digital single-lens reflex camera (digital SLR or DSLR) is a digital camera that combines the optics and the mechanisms of a single-lens reflex camera with a digital imaging sensor. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon EF 70–200mm Lens
The EF 70–200mm lenses are a group of telephoto zoom full-frame lenses made by Canon. The lenses have an EF mount to work with the EOS line of cameras. The lens comes in seven different versions, all of which have fixed maximum aperture at all focal lengths, and are L-series lenses. * f/4L USM * f/4L IS USM * f/4L IS II USM * f/2.8L USM * f/2.8L IS USM * f/2.8L IS II USM * f/2.8L IS III USM The latest iterations of both the f/4 and the f/2.8 variants were announced on 7 June 2018. The f/4 is currently under production and the original MSRP was increased from US$1,299 to US$1,499. In March 2021, it was reported that Canon had decided to discontinue the lens. Common fields of application The f/4 USM is popular among weight-sensitive landscape photographers and hobbyists who want L lens quality without spending thousands of dollars. The f/2.8 versions are popular among event photographers and photojournalists where the lens's lower light capabilities are required. Some p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon EF 1200mm Lens
The EF 1200 mm 5.6 L USM is a super- telephoto prime lens that was made by Canon Inc. It uses an EF mount, and is compatible with the Canon EOS camera range. It has a focal length of 1200 mm and so on a digital body with a sensor size of 22.5 mm × 15 mm (called 1.6× crop), such as a Canon EOS 40D or 450D, it provides a 35 mm field of view equivalent to that of a 1920 mm lens. With a body with a sensor size of 28.8 mm × 19.2 mm (called 1.3× crop), such as a Canon EOS-1D Mark IV, the field of view is equivalent to that of a 1560 mm lens. The lens was aimed at sports and wildlife photographers, and is both extremely expensive and extremely rare. Canon described it as "the world’s largest interchangeable SLR AF lens, in terms of both focal length and maximum aperture." Technical information The EF 1200 mm 5.6 L USM is a professional L-series lens, that is now discontinued. The lens was first developed for the Canon FD mount ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon EF 800mm Lens
The Canon EF 800mm 5.6L IS USM lens is a super-telephoto lens by Canon Inc., released at a manufacturer's suggested retail price of US$11,999.00 and now selling at an MSRP of $12,999.00. Technical information The EF 800mm 5.6L IS USM is a professional L series lens released June 2008. This lens is constructed with a magnesium alloy body and mount and with plastic extremities and switches. Features of this lens are: a wide rubber focus ring that is damped, a focus distance window, the ability to limit the focus range, a focus-preset mechanism, an image stabilizer that is effective up to four stops and is tripod sensing, an AF stop switch, and weather sealing. A maximum aperture of 5.6 gives this lens the ability to create depth of field effects. The optical construction of this lens contains two fluorite lens elements, and "Super UD" (Ultra low dispersion) and UD Lens elements. This lens uses an inner focusing system powered by a ring type USM motor. This lens is compatible wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon EF 600mm Lens
The Canon EF 600mm is a super-telephoto lens made by Canon Inc. The lens has an EF mount to work with the EOS line of cameras. *4L USM lens was released in November 1988 (923,000 yen). *4L IS USM lens was released in September 1999 (1,290,000 yen). *4L IS II USM lens was announced in February 2011 (US$12,999 at release, now US$11,499). *4L IS III USM lens was announced in September 2018 (US$12,999). The IS version has more lens groups and elements, and the weight was reduced from to for the first IS version. The weight was further reduced to for the 2nd IS version. The weight has been further reduced to for the 3rd IS version. All lenses are compatible with the Canon Extender EF teleconverters. Specifications References External links 600 __NOTOC__ 600 ( DC) was a leap year starting on Friday (link will display the full calendar) of the Julian calendar. The denomination 600 for this year has been used since the early medieval period, when the Anno Domini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon EF 400mm Lens
The Canon EF 400mm are seven super-telephoto lenses made by Canon. These lenses have an EF mount that work with the EOS line of cameras. These lenses are widely used by sports and wildlife photographers. Canon currently manufactures four 400mm prime lenses: *EF 400mm 2.8L IS III USM *EF 400mm 2.8L IS II USM *EF 400mm 4 DO IS II USM *EF 400mm 5.6L USM The 400mm 4 DO IS II USM, which replaced an earlier version of the same lens in 2014, is one of only two Canon lenses that make use of diffractive optics (the other is the EF 70–300mm f/4.5–5.6 DO IS USM). The use of diffractive optics allows the lens to be significantly lighter than it might otherwise be. These lenses are compatible with the Canon Extender EF teleconverters. Specifications of the EF 400mm lenses Use in astronomy Canon 400 mm f/2.8 L IS II USM lenses are used in the Dragonfly Telephoto Array. The array is designed to image astronomical objects with low surface brightness such as some satellite galaxies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yellow Check
Yellow is the color between green and orange on the spectrum of light. It is evoked by light with a dominant wavelength of roughly 575585 nm. It is a primary color in subtractive color systems, used in painting or color printing. In the RGB color model, used to create colors on television and computer screens, yellow is a secondary color made by combining red and green at equal intensity. Carotenoids give the characteristic yellow color to autumn leaves, corn, canaries, daffodils, and lemons, as well as egg yolks, buttercups, and bananas. They absorb light energy and protect plants from photo damage in some cases. Sunlight has a slight yellowish hue when the Sun is near the horizon, due to atmospheric scattering of shorter wavelengths (green, blue, and violet). Because it was widely available, yellow ochre pigment was one of the first colors used in art; the Lascaux cave in France has a painting of a yellow horse 17,000 years old. Ochre and orpiment pigments were use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon EF 300mm Lens
The EF 300mm lens refers to a family of telephoto prime lenses made by Canon, five of which have been sold to the general public and one of which was only made on special order. The lenses have an EF type mount which fits the Canon EOS line of cameras. When used on a digital EOS body with a field of view compensation factor of 1.3x, such as the Canon EOS-1D Mark IV, it provides a narrow field of view, equivalent to a 390 mm lens mounted on a 35mm frame body. With a 1.6x body such as the Canon EOS 650D, it provides a narrower field of view, equivalent to a 480 mm lens mounted on a 35mm frame body. This lens is most commonly used by sports and wildlife photographers, but is short enough to be use for extreme close-up portraits. Because of its rather high native magnification, it can be used for some macro type photography. Technical information The EF 300mm is a L series lens. This lens is constructed with a metal body and mount, and with plastic extremities and switch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
