The EF lens mount Main article: Canon EF lens mount The bayonet-style EF lens mount is at the center of the EOS camera system. Breaking compatibility with the earlier FD mount, it was designed with no mechanical linkages between moving parts in the lens and in the camera. The aperture and focus are controlled via electrical contacts, with motors in the lens itself. This was similar in many ways to Nikon's 1983 F3AF (and to many of Nikon's more recent autofocus lenses), although other manufacturers including Contax (with its G series of interchangeable-lens 35 mm rangefinder cameras) and Olympus (with its Four Thirds System) have since embraced this type of direct drive system. It is a large lens mount compared to most of its competition, enabling the use of larger aperture lenses. The bayonet-style mount 14mm F2.8 L lens TS-E 24mm f/3.5L lens 50mm F1.4 lens 85mm F1.2 L lens 100mm F2.8 macro lens 135mm F2 L lens Canon EF 400mm lens 16-35 F2.8 L lens 24-70 F2.8 L lens 70-200mm F2.8 L lens 70-300mm F4.5-5.6 IS DO lens EOS flash system Main article: Canon EOS flash system The flash system in the EOS cameras has gone through a number of evolutions since its first implementation. The basic EOS flash system was actually developed not for the first EOS camera, but rather for the last high-end FD-mount manual-focus camera, the T90, launched in 1986. This was the first Canon camera with through-the-lens (TTL) flash metering, although other brands had been metering that way for some time. It also introduced the A-TTL (Advanced TTL) system for better flash exposure in program mode, using infrared preflashes to gauge subject distance. This system was carried over into the early EOS cameras wholesale. A-TTL largely fell out of favor, and was replaced by E-TTL (Evaluative TTL). This used a pre-flash for advanced metering, and used the autofocus system to judge where the main subject was for more accurate exposure. E-TTL II, which was an enhancement in the camera's firmware only, replaced E-TTL from 2004. Canon Speedlite-brand flashes have evolved alongside the cameras. They are capable of wired and wireless multi-flash setups, the latter using visible or infrared pulses to synchronise. Speedlite 550EX Speedlite 430EX EOS cameras As of 2007, Canon has released no fewer than 40 EOS SLR camera models, starting with the introduction of the EOS 650 in 1987. In the 1990s, Canon worked with Kodak to produce digital camera bodies, starting with the EOS DCS 3 in 1995. The first digital EOS SLR camera wholly designed and manufactured by Canon is the EOS D30, released in 2000. Canon has also released two EOS cameras designed to use the APS film format, the EOS IX and the EOS IX Lite. There is also a manual-focus EOS camera, the Canon EF-M. It comes with all the automatic and manual exposure functions but lacks autofocus. However, it comes equipped with a split-screen/microprism focusing screen for precise manual focusing. Eye-controlled focusing Through the tracking of eyeball movements, EOS cameras equipped with eye-controlled focusing (ECF) are able to choose the appropriate autofocus point based on where the user is looking in the viewfinder frame. ECF comes especially useful in sports photography where the subject may shift its position in the frame rapidly. ECF is a function that is usually either loved or hated. Some users feel that it is not reliable enough for common use. Others report that they are able to use it reliably. Much of this depends on the user. Eyeglasses can also reduce its accuracy for some. EOS cameras equipped with ECF are the EOS A2E (U.S. model names are shown; see the table below for equivalents in other countries), EOS Elan IIE, EOS IXe, EOS-3, EOS Elan 7E, and EOS Elan 7NE. Canon has not continued its use of eye-controlled focusing with its digital SLRs, however. The EOS Elan 7NE is the last EOS camera to have this function. Quick control dial Quick Control Dial on EOS 100 Most prosumer and professional level EOS cameras feature a large quick control dial (QCD) on the camera back. Allowing easy operation of the camera using the thumb, the QCD is used for quick access to often-used functions that may otherwise require a more complicated procedure of button-presses and dial-clicks. Cameras equipped with the QCD can easily be operated with one hand (forefinger on the main dial, thumb on the QCD) without taking the eye off the viewfinder. Some useful functions that a QCD is programmed to do include setting exposure compensation, setting of aperture in manual exposure mode and scrolling of images and menus in digital EOS cameras. Multi-point autofocus system The top-line EOS cameras have up to 45 autofocus (AF) points, the most in their class, until superseded by Nikon's D3 and D300 digital SLR cameras with 51 autofocus points. This increases the chances of a sharply-focused photograph in situations where the subject travels across the frame at high speeds, e.g. sports, birds. The number, type, features and performance of autofocus point array systems is likely to continue to evolve. Having so many AF points also helps relieve the photographer from having to use the 'lock focus and recompose' method of framing a photograph, since the subject will most probably have been picked up by one or more of the AF points. Even though the camera is intelligent enough to select the correct AF point(s) most of the time, EOS cameras equipped with a multi-point AF system will still allow the photographer to manually select an AF point. EOS-3, EOS-1v, and the EOS-1D family feature a 45-point AF system. With the exception of EOS 1000D and EOS 7D, all Canon DSLRs introduced since late 2005, starting from the EOS 20D and the Rebel XTi (400D) feature a nine-point AF system in a diamond-shape formation. The EOS 5D, released in 2005, takes this 9-point AF system a step further by introducing six more 'invisible' AF points (i.e. not user-selectable) in helping the camera acquire focus faster during subject tracking. Older Canon DSLRs usually have seven-point AF. The EOS 7D, released in 2009, has a 19-point AF layout, fitting essentially within the same diamond-shaped area of the frame as the nine-point layout. For the earlier generation of 45-point AF system, the central column of 1 or 2 sensors (7 in all up to EOS-1Ds Mk II, EOS-1D Mk II N) are cross-type sensors, which offer a high degree of accuracy. Canon's latest professional SLRs, the EOS-1D Mk III and EOS-1Ds Mk III have 19 cross-type sensors for higher accuracy, as well as placing the cross-type sensors to complement the Rule of Thirds. Naming Scheme Identical Canon models are sometimes marketed under different names in different parts of the world. For example, the EOS Rebel 2000 known in the Americas is also known as EOS Kiss III in Japan, and EOS 300 in other parts of the world. Target Market Segment Typically Common Features International Americas Japan Consumer/Entry-level Pentamirror type viewfinder, lighter and cheaper build than other ranges, APS-C sized sensor on digital models. 3- or 4-digit model number. E.g. EOS 350D, EOS 300X, EOS 1000D Rebel (used in North America since 1990) E.g. EOS Digital Rebel XT, EOS Rebel T2 Kiss (used in Japan since 1993) E.g. EOS Kiss Digital N, EOS Kiss 7 Advanced amateur/prosumer Higher frame rate and more rugged construction than contemporary "entry-level" models. Partial weather sealing and APS-C sized sensor on digital models. 2-digit model number E.g. EOS 33V, EOS 40D Elan E.g. EOS Elan 7N (DSLRs share the same naming scheme as International) 7-series E.g. EOS 7s Premium Weather sealing and tougher construction. 1-digit model number E.g. EOS 3, EOS 5, EOS 5D, EOS 7D Same as International, except EOS A2 (EOS 5) Same as International Professional More rugged/waterproofed build than premium models, larger build with vertical grip, 100% viewfinder field of view, faster performance. APS-H sized sensors on 1D models and 35mm "Full-frame digital SLR" sensors on 1Ds models. model number 1 E.g. EOS-1D Mark II, EOS-1V, EOS-1Ds Mark III Same as International Same as International Film cameras v d e Canon EOS Film SLR timeline 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 Professional 1 1N 1V Prosumer 10 10S 5 A2e/A2 3 Advanced amateur 650/620/630 100 Elan 50e/50 Elan IIe/II 55 30/33 Elan 7e/7 7 30V/33V Elan 7Ne/7N 7s Consumer 750/850 1000F Rebel S 1000 1000FN Rebel S II 1000S 500 Rebel XS Kiss 500N Rebel G New Kiss 300 Rebel 2000 Kiss III 300V Rebel Ti Kiss 5 300X Rebel T2 Kiss 7 Entry level 5000 888 3000 88 3000N Rebel XS N 66 3000V Rebel K2 Kiss Lite This is a list of the 35 mm and APS Canon EOS models in order of introduction: Model (US) Model (Europe) Model (Japan) Release date EOS 650 EOS 650 EOS 650 March 1987 EOS 620 EOS 620 EOS 620 May 1987 EOS 750 EOS 750 EOS 750 October 1988 EOS 850 EOS 850 EOS 850 October 1988 EOS 630 EOS 600 EOS 630 QD April 1989 EOS-1 EOS-1 EOS-1 September 1989 EOS RT EOS RT EOS RT October 1989 EOS 10S EOS 10 EOS 10 QD March 1990 EOS 700 EOS 700 EOS 700 QD March 1990 EOS Rebel/Rebel S EOS 1000F QD EOS 1000 QD October 1990 EOS 10S commemorative kit EOS 10 EOS 10 QD August 1991 EOS Elan EOS 100 EOS 100 QD August 1991 EOS Rebel II/SII EOS 1000FN QD EOS 1000S QD March 1992 EOS A2/A2e EOS 5 EOS 5 QD November 1992 EOS Rebel XS EOS 500 EOS Kiss September 1993 EOS Rebel X - - November 1993 EOS-1N EOS-1N/1N HS/1N DP EOS-1N/1N HS/1N DP November 1994 - EOS 5000 EOS 888 January 1995 EOS-1N RS EOS-1N RS EOS-1N RS March 1995 EOS Elan II/IIe EOS 50/50e EOS 55 September 1995 EOS Rebel G EOS 500N New EOS Kiss September 1996 EOS IX EOS IX EOS IX E October 1996 EOS IX Lite EOS IX 7 EOS IX 50 March 1998 EOS-3 EOS-3 EOS-3 November 1998 - EOS 3000 EOS 88 March 1999 EOS Rebel 2000 EOS 300 EOS Kiss III April 1999 EOS-1v EOS-1v EOS-1v March 2000 EOS Elan 7/7e EOS 33/30 EOS 7 October 2000 - - EOS Kiss III L November 2001 EOS Rebel XS N EOS 3000N Canon EOS 66 February 2002 EOS Rebel Ti EOS 300V EOS Kiss 5 September 2002 EOS Rebel GII - - March 2003 EOS Rebel K2 EOS 3000V EOS Kiss Lite September 2003 EOS Elan 7N/7NE EOS 33V/30V EOS 7s April 2004 EOS Rebel T2 EOS 300X EOS Kiss 7 September 2004 Digital cameras Prior to the introduction of the EOS D30 digital SLR, Canon in collaboration with Kodak produced four digital SLRs by modifying the internals of the EOS-1N film SLR. These four digital SLRs had a Canon EOS body and thus can accept EF lenses, while the image sensor and electronics were designed and built by Kodak. The four cameras were: Model Release date EOS DCS3 July 1995 EOS DCS1 December 1995 EOS D2000/Kodak DCS520 March 1998 EOS D6000/Kodak DCS560 December 1998 In addition, Kodak produced the Kodak DCS Pro SLR/c in 2004, which was compatible with most EF lenses but was not produced in collaboration with Canon. The following digital SLRs, starting from the D30, had bodies and sensors completely designed and manufactured by Canon (except for the Canon EOS-1D, which uses a Panasonic sourced CCD sensor). Unlike most other digital SLR manufacturers, Canon digital SLRs are equipped with a CMOS sensor (with the exception of EOS-1D that uses a CCD sensor). Canon designs and manufactures their own CMOS sensors. v d e Canon EOS Digital SLR timeline Sensor 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 Flagship Full 1Ds 1Ds Mk II 1Ds Mk III APS-H 1D 1D Mk II 1D Mk II N 1D Mk III 1D Mk IV High-end Full 5D 5D Mk II APS-C 7D Prosumer D30 D60 10D 20D 30D 40D 50D Mid-range 300D Digital Rebel Kiss Digital 350D Digital Rebel XT Kiss Digital N 400D Digital Rebel XTi Kiss Digital X 450D Rebel XSi Kiss X2 500D Rebel T1i Kiss X3 550D Rebel T2i Kiss X4 Entry-level 1000D Rebel XS Kiss F Video capable See also... Canon Comparison of Canon EOS Digital Cameras List of Canon products Template:Canon DSLR cameras Canon Corporation Canon FD lens mount Canon FL Canon EF lens mount Single lens reflex Single lens reflex Digital single lens reflex 35 mm film Notes and references ^ "Canon History Hall: Birth of New-Generation Autofocus SLR Camera, "EOS"". http://www.canon.com/camera-museum/history/canon_story/1987_1991/1987_1991.html. Retrieved 29 January 2010. ^ "EOS 450D: get ready to play". http://www.canon.co.uk/press_centre/press_releases/cameras_accessories/eos450d_press_release.asp. Retrieved 2008-02-25. "the model presents consumers with an unprecedented level of image quality" ^ "CANON U.S.A.'S NEW EOS REBEL XSi PLACES SUPERIOR OPTICS AND PROFESSIONAL FEATURES INTO THE HANDS OF EMERGING PHOTO ENTHUSIASTS". http://www.usa.canon.com/templatedata/pressrelease/20080123_xsi.html. Retrieved 2008-02-25. "Canon U.S.A., Inc.'s EOS Rebel series of digital single lens reflex cameras the cameras that defined and refined what it means to be an "entry level" digital SLR" ^ "Canon EOS 40D brings new EOS platform to advanced amateur market". http://www.canon.co.uk/About_Us/News/Consumer_Releases/2007/EOS_40D.asp. Retrieved 2008-02-25. "Canon today introduces its latest digital SLR for advanced amateurs and semi-professionals" ^ "The Wait is Over: CANON U.S.A.'S HIGHLY ANTICIPATED EOS 40D DIGITAL SLR DELIVERS HIGH-RESOLUTION IMAGE QUALITY, HIGH-SPEED SHOOTING AND HIGH-END FUNCTIONALITY". http://www.usa.canon.com/templatedata/pressrelease/20070820_40d.html. Retrieved 2008-02-25. "Building on the success of Canon's perennially popular "prosumer" EOS 20D and 30D models, the EOS 40D advances the state-of-the-art for mid-range Digital SLR cameras" ^ "NEW CANON EOS 5D IS A PREMIUM DIGITAL SLR AT AN AFFORDABLE PRICE OFFERING A FULL-FRAME SENSOR WITH 12.8 MEGAPIXELS OF RESOLUTION". http://www.usa.canon.com/templatedata/pressrelease/20050822_eos5d.html. Retrieved 2008-02-25. "The New Canon EOS 5D Camera Is a Premium DSLR for Under $3,300" ^ "CANON U.S.A.'s NEW LINE-LEADING, 21.1-MEGAPIXEL, FULL-FRAME EOS-1Ds MARK III DIGITAL SLR KEEPS CANON AT THE TOP OF THE PRO PHOTO CLASS". http://www.usa.canon.com/templatedata/pressrelease/20070820_1dsmk3.html. Retrieved 2008-02-25. "While Canon's EOS-1D series has dominated the 35mm-based professional Digital SLR market for the past six years" External links EOS Camera Systems homepage at Canon.com EF lens specification chart (pdf) The Canon EOS FAQs Overview of the whole Canon EOS system incl. 3rd party manufacturers Flash Photography with Canon EOS Cameras - Part 1 - Part 2 - Part 3 Canon Camera Museum Canon EOS Feature Overview - archived copy of Canon Model feature overview from photozone.de at web.archive.org Canon SLR cameras and lens mounts (film) Lens Mount Series Model R Canonflex (1959), Canonflex R2000 (1960), Canonflex RP (1961), Canonflex RM (1962) FL FX (1964), FP (1964), Pellix (1965), FT QL (1966), Pellix QL (1966), TL (1968) FD F Amateur: FTb (1971), FTbn (1973), EF (1973), TLb (1974), TX (1975) Professional: F-1(1971), F-1n (1976), New F-1 (1981) A AE-1 (1976), AT-1 (1976), A-1 (1978), AV-1 (1979), AE-1 Program (1981), AL-1 (1982) T T50 (1983), T70 (1984), T80 (1985), T90 (1986), T60 (1990) EF 1 EOS-1 (1989), EOS-1N (1994), EOS-1N RS (1995), EOS-1v (2001) EOS 650 (1987), EOS 620 (1987), EOS 750QD (1988), EOS 850QD (1988), EOS 630QD (1989), EOS RT (1989), EOS 700QD (1989), EOS 10sQD (1990), EOS 1000F (1990), EOS 100 (1991), EOS EF-M (1991), EOS 5/5QD/A2/A2e (1992), EOS 1000FN (1992), EOS 500 (1993), EOS 888 (1993), EOS 50 (1995), EOS 500N (1996), EOS-3 (1998), EOS 88 (1999), EOS 300 (1999), EOS 30 (2000), EOS 3000N (2002), EOS 300V (2002), EOS 3000V (2003), EOS 30V (2004), EOS 300X (2004) IX EOS IX, EOS IX Lite Canon DSLR cameras Edit Categories: Canon Canon cameras SLR camerasHidden categories: Articles lacking reliable references from April 2008 All articles lacking reliable references All articles with unsourced statements Articles with unsourced statements from March 2009 I am China Agriculture Net writer, reports some information about nylon pulley , power transmission pulley.
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