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Autofocus. An autofocus (or 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 ...
MSRP. $899.00 USD USD. The Sigma 35 mm f/1.4 DG HSM Art is a wide-angle prime lens made by the Sigma Corporation. [1] The lens was announced at the 2012 photokina trade fair. [2] The lens is produced in Canon EF mount, Nikon F-mount, Pentax K mount, Sigma's own SA mount, and the Sony/Minolta AF Mount varieties, all have the same optical formula.
The Nikon F4 is a 35 mm autofocus (AF) single lens reflex (SLR) film camera, introduced in 1988 as the next generation in Nikon 's line of F series professional cameras. With industrial design by Giorgetto Giugiaro, the F4 was the first professional Nikon to feature a practical autofocus system. The F4 is able to accept any of Nikon's manual ...
The Canon FD 35-70mm f / 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 ...
Fixed-focus lens. The back of an iPhone 3G, showing its small fixed-focus lens. Mid-20th-century medium-format fixed-focus camera. A photographic lens for which the focus is not adjustable is called a fixed-focus lens or sometimes focus-free. The focus is set at the time of lens design, and remains fixed. It is usually set to the hyperfocal ...
The Nikon F-601, otherwise known as the Nikon N6006, is a 35mm single-lens reflex (SLR) film camera that was produced by Nikon starting in 1990. [1] The F601 featured an improved second-generation autofocus system, motor drive for automatic film advance, a built-in pop-up electronic flash, a top shutter speed of 1/2000 of a second, and a new ...
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Canon T80 with the 35-70AF lens. 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 ...