An autofocus ( AF ) optical system uses a sensor , a control system and a motor to focus on an automatically or manually selected point or area. An electronic rangefinder has a display instead of the motor; the adjustment of the optical system has to be done manually until indication. Autofocus methods are distinguished as active , passive or hybrid types.
76-683: Canon EOS ( Electro-Optical System ) is an autofocus single-lens reflex camera (SLR) and mirrorless camera series produced by Canon Inc. Introduced in 1987 with the Canon EOS 650 , all EOS cameras used 35 mm film until October 1996 when the EOS IX was released using the new and short-lived APS film. In 2000, the D30 was announced, as the first digital SLR designed and produced entirely by Canon. Since 2005, all newly announced EOS cameras have used digital image sensors rather than film. The EOS line
152-825: A 19-point AF layout, fitting essentially within the same diamond-shaped area of the frame as the nine-point layout. The EOS 70D , released in August 2013, inherited the 7D's 19-point layout, but with fewer AF control options. The 70D system was in turn handed down to the EOS 750D (Rebel T6i) and 760D (Rebel T6s), announced in February 2015. As mentioned above, the EOS 5D Mark III, EOS-1D X, EOS 5DS/5DS R, and EOS-1D X Mark II have 61-point AF layouts. The EOS 6D , released in October 2012, has an 11-point layout. The EOS 80D, announced in 2016, marked
228-489: A camera based on their previous development at photokina , named Correfot, and in 1978 they displayed an SLR camera with fully operational autofocus. The first mass-produced autofocus camera was the Konica C35 AF , a simple point and shoot model released in 1977. The Polaroid SX-70 Sonar OneStep was the first autofocus single-lens reflex camera , released in 1978. The Pentax ME-F , which used focus sensors in
304-455: A certain degree of illumination to the subject (whether natural or otherwise), while active systems may focus correctly even in total darkness when necessary. Some cameras and external flash units have a special low-level illumination mode (usually orange/red light) which can be activated during auto-focus operation to allow the camera to focus. A method variously referred to as trap focus , focus trap , or catch-in-focus uses autofocus to take
380-439: 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. There have been several exceptions to Canon's recent rule of a 9-point AF system. The EOS 1000D (Rebel XS) has the 7-point AF system of most older Canon DSLRs. The EOS 7D, released in 2009, has
456-551: A few "high-precision" focus points with an additional set of prisms and sensors; they are only active with " fast lenses " with certain geometrical apertures (typically f-number 2.8 and faster). Extended precision comes from the wider effective measurement base of the "range finder" Some modern sensors (for example one in Librem 5 ) include about 2% phase detection pixels on the chip. With suitable software support, that enables phase detection auto focus. Contrast-detection autofocus
532-515: A few dozen wide), some modern cameras ( Canon EOS-1V , Canon EOS-1D , Nikon D2X ) feature TTL area SIR sensors that are rectangular in shape and provide two-dimensional intensity patterns for a finer-grain analysis. Cross-type focus points have a pair of sensors oriented at 90° to one another, although one sensor typically requires a larger aperture to operate than the other. Some cameras ( Minolta 7 , Canon EOS-1V , 1D , 30D / 40D , Pentax K-1 , Sony DSLR-A700 , DSLR-A850 , DSLR-A900 ) also have
608-816: A high degree of accuracy. The EOS-1Ds Mk III , replaced by the EOS-1D X, has 19 cross-type sensors for higher accuracy, as well as placing the cross-type sensors to complement the Rule of Thirds . The other Canon professional SLR replaced by the EOS-1D X, the APS-H EOS-1D Mk IV , has 39 cross-type sensors, a major increase from the 19 of the Mk III . Of the 61 AF points of the EOS-1D X and 5D MkIII, 21 central points and 20 outer points are cross-type, and five central points are dual-cross-type (sensitive to diagonal lines in addition to horizontal and vertical). All 65 points of
684-412: A hybrid system is the combination of passive phase-detection auto-focus and passive contrast auto-focus, sometimes assisted by active methods, as both methods need some visible contrast to work with. Under their operational conditions, phase-detection auto-focusing is very fast, since the measurement method provides both information, the amount of offset and the direction, so that the focusing motor can move
760-423: A laser or LED light to the subject and calculating the distance based on the time it takes for the light to travel to the subject and back. This technique is sometimes called laser autofocus , and is present in many mobile phone models from several vendors. It is also present in industrial and medical devices. An exception to the two-step approach is the mechanical autofocus provided in some enlargers, which adjust
836-535: A loss of contrast gives no indication of the direction of motion towards or away from the camera. Contrast-detect autofocus is a common method in digital cameras that lack shutters and reflex mirrors. Most DSLRs use this method (or a hybrid of both contrast and phase-detection autofocus) when focusing in their live-view modes. A notable exception is Canon digital cameras with Dual Pixel CMOS AF. Mirrorless interchangeable-lens cameras typically used contrast-measurement autofocus, although phase detection has become
SECTION 10
#1732802438763912-436: A problem, unless the window is stained. Accuracy of active autofocus systems is often considerably less than that of passive systems. Active systems may also fail to focus a subject that is very close to the camera (e.g., macro photography ). Passive systems may not find focus when the contrast is low, notably on large single-colored surfaces (walls, blue sky, etc.) or in low-light conditions. Passive systems are dependent on
988-480: A separate sensor array providing light metering , although the latter can be programmed to prioritize its metering to the same area as one or more of the AF sensors. Through-the-lens optical autofocusing is usually speedier and more precise than manual focus with an ordinary viewfinder, although more precise manual focus can be achieved with special accessories such as focusing magnifiers. Autofocus accuracy within 1/3 of
1064-510: A shot when a subject moves into the focal plane (at the relevant focal point); this can be used to get a focused shot of a rapidly moving object, particularly in sports or wildlife photography , or alternatively to set a "trap" so that a shot can automatically be taken without a person present. This is done by using AF to detect but not set focus – using manual focus to set focus (or switching to manual after focus has been set) but then using focus priority to detect focus and only release
1140-621: Is a discontinued 3.1- megapixel professional digital single lens reflex camera (DSLR) body, initially announced by Canon on May 17, 2000. It is part of the Canon EOS line of cameras and uses the EF lens mount . The EOS D30 was Canon's first "home grown" digital SLR. Before that point Canon had a contract with Kodak to rebrand the Kodak 2-megapixel DCS 520 as Canon EOS D2000 and the 6-megapixel DCS 560 as Canon EOS D6000 digital SLRs, which combined Kodak digital backs and Canon camera bodies. The D30
1216-409: Is achieved by dividing the incoming light into pairs of images and comparing them. Through-the-lens secondary image registration (TTL SIR) passive phase detection is often used in film and digital SLR cameras . The system uses a beam splitter (implemented as a small semi-transparent area of the main reflex mirror, coupled with a small secondary mirror) to direct light to an AF sensor at the bottom of
1292-425: Is achieved by measuring contrast (vision) within a sensor field through the lens . The intensity difference between adjacent pixels of the sensor naturally increases with correct image focus. The optical system can thereby be adjusted until the maximal contrast is detected. In this method, AF does not involve actual distance measurement at all. This creates significant challenges when tracking moving subjects , since
1368-536: Is also the name of the goddess of dawn in Greek mythology, which further signifies the design's generational stature. The EOS emblem was created using Handel Gothic typography. It competes primarily with the Nikon F series and its successors, as well as autofocus SLR systems from Olympus Corporation , Pentax , Sony / Minolta , and Panasonic / Leica . At the heart of the system is the EF lens mount , which replaced
1444-416: Is confirmed only when the AF sensor sees an in-focus subject. The only apparent differences between the two modes are that a focus-locking mode halts on focus confirmation, and a continuously focusing mode has predictive elements to work with moving targets, which suggests they are the same closed-loop process. Although AF sensors are typically one-dimensional photosensitive strips (only a few pixels high and
1520-408: Is still in production as Canon's current digital SLR (DSLR) range, and, with the 2012 introduction of the Canon EOS M , Canon's mirrorless interchangeable-lens camera (MILC) system. In 2018 the system was further extended with the introduction of the EOS R camera, Canon's first full frame mirrorless interchangeable lens system. The development project was called "EOS" (Electro Optical System). EOS
1596-428: Is the phase-detection auto-focus system used in single-lens reflex cameras since the 1985s. The passive phase-detection auto-focus needs some contrast to work with, making it difficult to use in low-light scenarios or on even surfaces. An AF illuminator will illuminate the scene and project contrast patterns onto even surfaces, so that phase-detection auto-focus can work under these conditions as well. A newer form of
SECTION 20
#17328024387631672-402: Is typically used to mutually compensate for the intrinsical weaknesses of the various methods in order to increase the overall reliability and accuracy or to speed up AF function. A rare example of an early hybrid system is the combination of an active IR or ultrasonic auto-focus system with a passive phase-detection system. An IR or ultrasonic system based on reflection will work regardless of
1748-657: Is used to control an electromechanical system that adjusts the focus of the optical system. A variation of autofocus is an electronic rangefinder , in which focus data are provided to the operator, but adjustment of the optical system is still performed manually. The speed of the AF system is highly dependent on the widest aperture offered by the lens at the current focal length. F-stops of around f / 2 to f / 2.8 are generally considered best for focusing speed and accuracy. Faster lenses than this (e.g.: f / 1.4 or f / 1.8) typically have very low depth of field, meaning that it takes longer to achieve correct focus, despite
1824-509: The Yashica 230 AF . Trap focus is also possible on some Pentax (e.g. K-x and K-5 ), Nikon , and Canon EOS cameras. The EOS 1D can do it using software on an attached computer, whereas cameras like the EOS 40D and 7D have a custom function (III-1 and III-4 respectively) which can stop the camera trying to focus after it fails. On EOS cameras without genuine trap focus, a hack called "almost trap focus" can be used, which achieves some of
1900-630: The depth of field (DOF) at the widest aperture of the lens is common in professional AF SLR cameras. Most multi-sensor AF cameras allow manual selection of the active sensor, and many offer automatic selection of the sensor using algorithms which attempt to discern the location of the subject. Some AF cameras are able to detect whether the subject is moving towards or away from the camera, including speed and acceleration, and keep focus — a function used mainly in sports and other action photography. Canon cameras call this AI servo ; Nikon cameras call it "continuous focus". The data collected from AF sensors
1976-692: 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 was the EOS D30 , released in 2000. Canon sold two EOS cameras designed to use the APS film format, the EOS IX and the EOS IX Lite . Canon also sold a manual-focus camera, the Canon EF-M , which used the same EF lens mount as
2052-590: The 7D MkII are cross-type, but only the center point is dual-cross-type. Similarly, as of 2017, all AF points on later generations of the X0D series (beginning with the 40D and continuing through the current 80D) are cross-type sensors for higher accuracy, and the center sensor is dual-cross-type for even greater accuracy and sensitivity. In June 2012, the EOS 650D (Rebel T4i) became the first consumer-level Canon to receive this AF system. Identical Canon models are sometimes marketed under different names in different parts of
2128-485: 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
2204-412: The EOS cameras. It came with all the automatic and manual exposure functions but lacked autofocus. It came equipped with a split-screen/microprism focusing screen for precise manual focusing. Through the tracking of eyeball movements , EOS cameras equipped with eye-controlled focusing (ECF) (some identifiable by the suffix E) were able to select the desired autofocus point in the scene, based on where
2280-473: The FA and FA* series lenses from 1991. Their first K AF -mount Pentax lenses with AF had been introduced in 1989. In 1992, Nikon changed back to lens integrated motors with their AF-I and AF-S range of lenses; today their entry-level DSLRs do not have a focus motor in the body due to the availability of motors in all new developed AF-Lenses . Active AF systems measure distance to the subject independently of
2356-675: The M5 but the M6 Mark II succeeds both the M5/M6. EOS M5 , EOS M6 , EOS M6 Mark II , EOS RP EOS R EOS R5 EOS R6 EOS R3 This is a list of the 35 mm Film and APS Canon EOS models in order of introduction: Prior to the introduction of the EOS D30 digital SLR, Kodak produced four digital SLRs also sold under the Canon brand. These cameras used a digital camera back with
Canon EOS - Misplaced Pages Continue
2432-499: The OC-E3 Off-Camera Shoe Cord, which can be used to hand-hold the flash while allowing the camera to control it through the cord. The Off-Camera Shoe Cord is popular among portrait photographers who need to have more control over lighting than a camera mounted flash can offer. As of 2017, Canon has released no fewer than 70 EOS SLR and DSLR camera models, starting with the introduction of the EOS 650 in 1987. In
2508-404: The camera body and gears in the lens ("screw drive") or through electronic transmission of the drive instruction through contacts in the mount plate to a motor in the lens. Lens-based motors can be of a number of different types, but are often ultrasonic motors or stepper motors . Magnets are often used in electromagnetic motors, such as Voice coil motors (VCMs) and Stepper motor , which move
2584-556: The camera body coupled with a motorized lens , became the first autofocus 35 mm SLR in 1981. In 1983 Nikon released the F3AF , their first autofocus camera, which was based on a similar concept to the ME-F. The Minolta 7000 , released in 1985, was the first SLR with an integrated autofocus system, meaning both the AF sensors and the drive motor were housed in the camera body, as well as an integrated film advance winder — which
2660-428: The camera uses flash focus assist and is set to an operation mode that overrides the flash, it may also disable the focus assist. Thus, autofocus may fail to acquire the subject. Similar stroboscopic flashing is sometimes used to reduce the red-eye effect , but this is only intended to constrict the subject's eye pupils before the shot. Some external flash guns have integrated autofocus assist lamps that replace
2736-399: The camera's autofocus system uses to achieve focus. Many cameras and nearly all camera phones lack a dedicated autofocus assist lamp. Instead, they use their built-in flash, illuminating the subject with bursts of light. This aids the autofocus system in the same fashion as a dedicated assist light, but has the disadvantage of startling or annoying people. Another disadvantage is that if
2812-399: The camera. When in use, the lens will constantly maintain its focus on the subject, hence it is commonly used for sports and action photography . AI refers to artificial intelligence : algorithms that constantly predict where a subject is about to be based on its speed and acceleration data from the autofocus sensor. Modern autofocus is done through one of two mechanisms; either a motor in
2888-416: The camera. Two micro-lenses capture the light rays coming from the opposite sides of the lens and divert it to the AF sensor, creating a simple rangefinder with a base within the lens's diameter. The two images are then analysed for similar light intensity patterns (peaks and valleys) and the separation error is calculated in order to find whether the object is in front focus or back focus position. This gives
2964-416: The chances of a sharply focused photograph in situations where the subject travels across the frame at high speeds (e.g. sports, wildlife). Having so many AF points also helps relieve the photographer from having to use the 'lock focus and recompose' method of framing a photograph that can introduce focusing inaccuracy. The camera generally focuses on the closest object or on human faces, which may not be what
3040-413: The direction and an estimate of the required amount of focus-ring movement. PD AF in a continuously focusing mode (e.g. "AI Servo" for Canon , "AF-C" for Nikon , Pentax and Sony ) is a closed-loop control process. PD AF in a focus-locking mode (e.g. "One-Shot" for Canon , "AF-S" for Nikon and Sony ) is widely believed to be a "one measurement, one movement" open-loop control process, but focus
3116-498: The effective measurement basis is typically set to between 1:5.6 and 1:6.7, so that AF continues to work with slow lenses (at least for as long as they are not stopped down). This, however, reduces the intrinsical accuracy of the autofocus system, even if fast lenses are used. Since the effective measurement basis is an optical property of the actual implementation, it cannot be changed easily. Very few cameras provide multi-PD-AF systems with several switchable measurement bases depending on
Canon EOS - Misplaced Pages Continue
3192-401: The effects of trap focus. By using the custom firmware Magic Lantern , some Canon DSLRs can perform trap focus. AI Servo is an autofocus mode found on Canon SLR cameras, and in other brands such as Nikon , Sony , and Pentax , under the name "continuous focus" (AF-C). Also referred to as focus tracking , it is used to track a subject as it moves around the frame, or toward and away from
3268-419: The eye off the viewfinder. A QCD is programmed to perform useful functions, which may include setting exposure compensation, setting of aperture in manual exposure mode, and scrolling of images and menus in digital EOS cameras. Currently, top-line EOS cameras have either 61 or 65 user-selectable autofocus (AF) points. Autofocus is a camera's ability to focus a lens automatically on an object by pressing down on
3344-415: The focal range, stopping precisely at the point where maximal contrast is detected. This means that lenses designed for phase detection often perform poorly on camera bodies that use contrast detection. The assist light (also known as AF illuminator) "activates" passive autofocus systems in low-light and low- contrast situations in some cameras. The lamp projects visible or IR light onto the subject, which
3420-588: The image sensor and associated electronics designed and built by Kodak together with modified internals of the EOS-1N film SLR. Due to using the Canon EOS body, these four digital SLRs can accept EF lenses. The four cameras were: Autofocus Autofocus systems rely on one or more sensors to determine correct focus. Some AF systems rely on a single sensor, while others use an array of sensors. Most modern SLR cameras use through-the-lens optical sensors, with
3496-456: The increased amount of light. Most consumer camera systems will only autofocus reliably with lenses that have a widest aperture of at least f / 5.6, whilst professional models can often cope with a widest aperture of f / 8, which is particularly useful for lenses used in conjunction with teleconverters . Between 1960 and 1973, Leitz (Leica) patented an array of autofocus and corresponding sensor technologies. In 1976, Leica had presented
3572-514: The latter case, infrared light is usually used to triangulate the distance to the subject. Compact cameras including the Nikon 35TiQD and 28TiQD , the Canon AF35M , and the Contax T2 and T3 , as well as early video cameras, used this system. A newer approach included in some consumer electronic devices, like mobile phones, is based on the time-of-flight principle, which involves shining
3648-494: The lens directly. Passive AF systems determine correct focus by performing passive analysis of the image that is entering the optical system. They generally do not direct any energy, such as ultrasonic sound or infrared light waves, toward the subject. (However, an autofocus assist beam of usually infrared light is required when there is not enough light to take passive measurements.) Passive autofocusing can be achieved by phase detection or contrast measurement. Phase detection (PD)
3724-407: The lens elements to achieve precise focusing. The magnetic field interacts with coils to produce motion for adjusting the lens position quickly and accurately based on focus requirements. Magnets are ideal for this purpose because they enable smooth and rapid adjustments without direct physical contact, enhancing durability and response time. Some camera bodies, including all Canon EOS bodies and
3800-452: The lens itself. This was similar in some ways to Canon's earlier attempt at AF with the T80 . Other manufacturers including Contax (with its G series of interchangeable-lens 35 mm rangefinder cameras), Nikon 's 1983 F3AF, 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
3876-593: The lens right into (or close to) focus without additional measurements. Additional measurements on the fly, however, can improve accuracy or help keep track of moving objects. However, the accuracy of phase-detection auto-focus depends on its effective measurement basis. If the measurement basis is large, measurements are very accurate, but can only work with lenses with a large geometrical aperture (e.g. 1:2.8 or larger). Even with high contrasty objects, phase-detection AF cannot work at all with lenses slower than its effective measurement basis. In order to work with most lenses,
SECTION 50
#17328024387633952-451: The lens stopped down. Also, since contrast AF continues to work in stopped-down mode rather than only in open-aperture mode, it is immune to aperture-based focus shift errors phase-detection AF systems suffer since they cannot work in stopped-down mode. Thereby, contrast AF makes arbitrary fine-focus adjustments by the user unnecessary. Also, contrast AF is immune to focusing errors due to surfaces with repeating patterns and they can work over
4028-401: The lens used in order to allow normal auto-focusing with most lenses, and more accurate focusing with fast lenses. Contrast AF does not have this inherent design limitation on accuracy as it only needs a minimal object contrast to work with. Once this is available, it can work with high accuracy regardless of the speed of a lens; in fact, for as long as this condition is met, it can even work with
4104-406: The light conditions, but can be easily fooled by obstacles like window glasses, and the accuracy is typically restricted to a rather limited number of steps. Phase-detection autofocus "sees" through window glasses without problems and is much more accurate, but it does not work in low-light conditions or on surfaces without contrasts or with repeating patterns. A very common example of combined usage
4180-400: The more budget-oriented among Nikon's DX models, do not include an autofocus motor and therefore cannot autofocus with lenses that lack an inbuilt motor. Some lenses, such as Pentax' DA* designated models, although normally using an inbuilt motor, can fall back to screwdrive operation when the camera body does not support the necessary contact pins. Canon EOS D30 The Canon EOS D30
4256-516: The more sophisticated stand-alone sensors, but since the fine focusing is now carried out through contrast focusing, the phase-detection AF sensors are only need to provide coarse directional information in order to speed up the contrast auto-focusing process. In July, 2010, Fujifilm announced a compact camera, the F300EXR, which included a hybrid autofocus system consisting of both phase-detection and contrast-based elements. The sensors implementing
4332-412: The norm on most mirrorless cameras giving them significantly better AF tracking performance compared to contrast detection. Contrast detection places different constraints on lens design when compared with phase detection. While phase detection requires the lens to move its focus point quickly and directly to a new position, contrast-detection autofocus instead employs lenses that can quickly sweep through
4408-492: The optical system, and subsequently adjust the optical system for correct focus. There are various ways to measure distance, including ultrasonic sound waves and infrared light. In the first case, sound waves are emitted from the camera, and by measuring the delay in their reflection, distance to the subject is calculated. Polaroid cameras including the Spectra and SX-70 were known for successfully applying this system. In
4484-447: The phase-detection AF can assist a contrast AF system to be fast and accurate at the same time, to compensate aperture-based focus-shift errors, and to continue to work with lenses stopped down, as, for example, in stopped-down measuring or video mode. Recent developments towards mirrorless cameras seek to integrate the phase-detection AF sensors into the image sensor itself. Typically, these phase-detection sensors are not as accurate as
4560-406: The phase-detection AF in this camera are integrated into the camera's Super CCD EXR. Currently it is used by Fujifilm FinePix Series, Fujifilm X100S , Ricoh , Nikon 1 series , Canon EOS 650D/Rebel T4i and Samsung NX300 . Active systems will typically not focus through windows, since sound waves and infrared light are reflected by the glass. With passive systems this will generally not be
4636-469: The photographer wants, so EOS cameras equipped with a multi-point AF system still allow the photographer to manually select an AF point. The EOS-3, EOS-1V , all EOS-1D models prior to the EOS-1D X, EOS 80D , EOS 77D , and EOS 800D/Rebel T7i feature a 45-point AF system. Most Canon DSLRs introduced since late 2005, starting from the EOS 20D and the Rebel XTi (400D) , feature a nine-point AF system in
SECTION 60
#17328024387634712-516: The previous FD lens mount , which mainly supported only manual-focus lenses. The EOS R full frame camera introduced a new lens mount to the system – the RF mount . The bayonet-style EF lens mount is at the centre 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
4788-503: The return of 45-point AF systems to the Canon EOS line, as well as the first appearance of a 45-point system in a non-professional body. This system was brought downmarket in 2017 with its inclusion in the upper-entry-level EOS 77D and mid-entry-level EOS 800D/Rebel T7i. 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 are sensitive to both vertical and horizontal lines to offer
4864-519: The same naming scheme as International ) E.g., EOS 7s (DSLRs share the same naming scheme as International ) E.g., EOS 3, EOS 5, 5DS / 5DS R , 5D , 5D Mark II , 5D Mark III , 5D Mark IV , 6D , 6D Mark II , 7D , 7D Mark II E.g., EOS-1D Mark II, EOS-1V, EOS-1Ds Mark III , EOS-1D X Mark II EOS M , EOS M2 , EOS M3 , EOS M10 , EOS M100 EOS M50 , EOS M50 Mark II The M6 slots below
4940-458: The shutter button. Autofocus most often chooses the closest image in the field of view to focus on. The following EOS cameras feature such a system, with 61 points unless otherwise indicated: The release of the 5D Mark III gave Canon the lead once again in this category; previously, its top-line cameras had 45 AF points, which led the industry until Nikon released its D3 and D300 DSLRs with 51-point AF systems. A higher number of AF points increases
5016-400: The shutter when an object is in focus. The technique works by choosing the focus adjustment (turning AF off), then setting the shooting mode to "Single" (AF-S), or more specifically focus priority, then depressing the shutter – when the subject moves into focus, the AF detects this (though it does not change the focus), and a shot is taken. The first SLR to implement trap focusing was
5092-531: The stroboscopic on-camera flash. Many of them are red and less obtrusive. Another way to assist contrast based AF systems in low light is to beam a laser pattern on to the subject. The laser method is commercially called Hologram AF Laser and was used in Sony CyberShot cameras around the year 2003, including Sony's F707, F717 and F828 models. In a hybrid autofocus system, focus is achieved by combining two or more methods, such as: The double effort
5168-500: The thumb. The QCD is used for quick access to often-used functions that would otherwise require a more complicated procedure of button presses and dial clicks. Settings such as ISO button, Exposure Compensation button, or menus are all easily available through the QCD. Cameras equipped with the QCD can easily be operated with one hand (forefinger on the main dial, thumb on the QCD) without taking
5244-532: The use of larger aperture lenses. 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
5320-514: The user was looking in the viewfinder frame. ECF was especially useful in sports photography where the subject may shift its position in the frame rapidly. EOS cameras equipped with ECF were 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 did not continue its use of eye-controlled focusing for its digital SLRs. The EOS Elan 7NE
5396-454: The whole frame, not just near the center of the frame, as phase-detection AF does. The down-side, however, is that contrast AF is a closed-loop iterative process of shifting the focus back and forth in rapid succession. Compared to phase-detection AF, contrast AF is slow, since the speed of the focus iteration process is mechanically limited and this measurement method does not provide any directional information. Combining both measurement methods,
5472-600: 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. E.g., EOS 650D , EOS 300V , EOS 1100D , EOS 100D , EOS 4000D E.g., EOS Digital Rebel T3 , EOS Rebel T4i , EOS Rebel SL1 E.g., EOS Kiss Digital N , EOS Kiss X6i , EOS Kiss X7 E.g., EOS 40D , EOS 70D , EOS 760D E.g., EOS Elan 7N (DSLRs share
5548-450: 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. Later models, including RT in their model name, can also communicate via radio links, where up to 16 units can make up a network. Canon also produces Speedlite accessories, including
5624-548: Was succeeded by the 6.3-megapixel D60 in 2002. [REDACTED] Media related to Canon EOS D30 at Wikimedia Commons PROCESSOR : Non-DIGIC | DIGIC | DIGIC II | DIGIC III | DIGIC 4 / 4+ | DIGIC 5 / 5+ | DIGIC 6 / 6+ | DIGIC 7 | DIGIC 8 | DIGIC X VIDEO: 720p | 1080p | Uncompressed 1080p | 4K | 5.5K | 8K ⋅ SCREEN : Flip (tilt) , Articulating , Touchscreen ⋅ BODY FEATURE: Weather Sealed SPECIALTY MODELS: Astrophotography
5700-462: Was the last EOS camera to have this function, until 2021 when Canon reintroduced eye-controlled focus with the EOS R3 . Most prosumer and professional level EOS cameras feature a large quick control dial (QCD) on the camera back. The first consumer-level EOS camera with this feature was the EOS 760D/Rebel T6s , announced in February 2015. This feature allows easy adjustment of certain parameters using
5776-408: Was to become the standard configuration for SLR cameras from this manufacturer, and also Nikon abandoned their F3AF system and integrated the autofocus-motor and sensors in the body. Canon decided to discontinue their FD mount and switched to the completely electronic EF mount with motorised lenses in 1987. Pentax was the first to introduce focusing distance measurement for SLR cameras with
#762237