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A-DEP: [3] Canon also offers A-DEP (Automatic DEPth of field) mode on some cameras, which sets the depth of field and focus in a single shot. However, this requires lining up both the nearest and further objects on autofocus points at the same time, which may be difficult.
In photography, manual focus override, also known as full-time manual focus, allows manual intervention in the autofocus acquisition process simply by turning the focus ring on a photographic lens. There are a number of technologies used to implement this feature.
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). [13] Also referred to as focus tracking , it is used to track a subject as it moves around the frame, or toward and away from the camera.
In 1987 Canon was the first to use USM (Ultrasonic Motor) with the Canon EF 300mm f/2.8L USM. [19] In 1989 Canon was the first to create a full frame f/1.0 AF (AutoFocus) lens and the only one until today with the Canon EF 50mm f/1.0L USM. In 1993 Canon was the first to create an interchangeable 10× superzoom lens for SLR cameras.
The EOS-3 introduced the 45-point autofocus system later used in the EOS-1V, EOS-1D and subsequent Canon professional SLRs. It was the last camera outside the 1-series, either film or digital, to receive Canon's top-of-the-line AF system until the March 2012 announcement of the EOS 5D Mark III. [2]
The Canon AL-1 was an FD mount, 35mm single-lens reflex camera introduced in March 1982. [1] [2] Its main feature was the "Quick Focus" focus-assist system [3] that was aimed at those who had trouble focusing through the viewfinder—either novices, or those with poor eyesight—and was intended to head off competition from the first full-autofocus cameras from other manufacturers, such as the ...
There is one other Canon FD autofocus lens, the Canon New FD 35-70 mm f/4 AF. This was introduced in 1981, and uses a similar autofocus system to the T80's lenses, with an integral autofocus motor. The lens has a self-contained autofocus system that does not require autofocus electronics in the camera body.
The Canon AF35M, by Canon Japan or the Sure Shot by Canon USA, was Canon Inc.'s first autofocus 35mm lens-shutter compact camera. [ 1 ] [ 2 ] It was launched in November 1979 [ 1 ] and received the Japanese Ministry of International Trade and Industry's 1980 Good Design Award in September 1980. [ 2 ]