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Index 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. [1]

77 relations: Algorithm, Aperture, Artificial intelligence, Autofocus, Beam splitter, Camera lens, Canon AF35M, Canon EOS, Canon EOS 30D, Canon EOS 40D, Canon EOS 650D, Canon EOS-1D, Canon EOS-1V, Canon Inc., Contax, Contrast (vision), Control system, Control theory, Depth of field, Digital camera, Digital camera modes, Digital single-lens reflex camera, Electric motor, Electromechanics, F-number, Fixed-focus lens, Focus (optics), Fujifilm, Fujifilm FinePix, Infrared, Instant camera, Konica C35 AF, Light-field camera, List of Nikon F-mount lenses with integrated autofocus motor, Live preview, Macro photography, Manual focus override, Metering mode, Minolta A-mount system, Minolta Maxxum 7000, Mirrorless interchangeable-lens camera, Nikon, Nikon 1 series, Nikon D2X, Nikon DX format, Nikon F3, Open-loop controller, Optics, Passivity (engineering), Pentax, ..., Pentax (lens), Pentax ME F, Photokina, Point-and-shoot camera, Polarizer, Polaroid Corporation, Polaroid SX-70, Rangefinder, Red-eye effect, Ricoh, Samsung NX300, Sensor, Shutter (photography), Single-lens reflex camera, Sony, Sony Alpha 700, Sony Alpha 850, Sony Alpha 900, Spherical aberration, Stepper motor, Super CCD, Teleconverter, Through-the-lens metering, Time of flight, Triangulation, Ultrasonic motor, Ultrasound. Expand index (27 more) »


In mathematics and computer science, an algorithm is an unambiguous specification of how to solve a class of problems.

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In optics, an aperture is a hole or an opening through which light travels.

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Artificial intelligence

Artificial intelligence (AI, also machine intelligence, MI) is intelligence demonstrated by machines, in contrast to the natural intelligence (NI) displayed by humans and other animals.

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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.

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Beam splitter

A beam splitter is an optical device that splits a beam of light in two.

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Camera lens

A camera lens (also known as photographic lens or photographic objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically.

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Canon AF35M

The Canon AF35M, by Canon Japan or the Sure Shot by Canon USA, was Canon Inc.'s first autofocus 35mm lens-shutter compact camera.

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Canon EOS

Canon EOS (Electro-Optical System) is an autofocus single-lens reflex camera (SLR) camera series produced by Canon Inc..

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Canon EOS 30D

The Canon EOS 30D is an 8.2-megapixel semi-professional digital single-lens reflex camera, initially announced on February 21, 2006.

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Canon EOS 40D

The Canon EOS 40D is a 10.1-megapixel semi-professional digital single-lens reflex camera.

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Canon EOS 650D

The Canon EOS 650D, known as the Kiss X6i in Japan or the Rebel T4i in the Americas, is an 18.0 megapixels digital single-lens reflex camera (DSLR), announced by Canon on June 8, 2012.

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Canon EOS-1D

The Canon EOS-1D is a 4-megapixel professional digital single-lens reflex camera launched in November 2001 as part of Canon's flagship EOS-1 series.

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Canon EOS-1V

The Canon EOS-1V is a 35mm single-lens reflex camera from Canon's EOS series, released in 2000.

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Canon Inc.

is a Japanese multinational corporation specializing in the manufacture of imaging and optical products, including cameras, camcorders, photocopiers, steppers, computer printers and medical equipment. It's headquartered in Ōta, Tokyo, Japan."." Canon. Retrieved on 13 January 2009. Canon has a primary listing on the Tokyo Stock Exchange and is a constituent of the TOPIX index. It has a secondary listing on the New York Stock Exchange.

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Contax began as a camera model in the Zeiss Ikon line in 1932, and later became a brand name.

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Contrast (vision)

Contrast is the difference in luminance or colour that makes an object (or its representation in an image or display) distinguishable.

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Control system

A control system manages, commands, directs, or regulates the behavior of other devices or systems using control loops.

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Control theory

Control theory in control systems engineering deals with the control of continuously operating dynamical systems in engineered processes and machines.

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Depth of field

In optics, particularly as it relates to film and photography, the optical phenomenon known as depth of field (DOF), is the distance about the Plane of Focus (POF) where objects appear acceptably sharp in an image.

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Digital camera

A digital camera or digicam is a camera that captures photographs in digital memory.

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Digital camera modes

Most digital cameras support the ability to choose among a number of configurations, or modes, for use in various situations.

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Digital single-lens reflex camera

A digital single-lens reflex camera (also called 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, as opposed to photographic film.

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Electric motor

An electric motor is an electrical machine that converts electrical energy into mechanical energy.

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In engineering, electromechanics combines processes and procedures drawn from electrical engineering and mechanical engineering.

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The f-number of an optical system (such as a camera lens) is the ratio of the system's focal length to the diameter of the entrance pupil.

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Fixed-focus lens

A photographic lens for which the focus is not adjustable is called a fixed-focus lens or sometimes focus-free.

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Focus (optics)

In geometrical optics, a focus, also called an image point, is the point where light rays originating from a point on the object converge.

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, trading as Fujifilm (stylized as FUJiFILM), or simply Fuji, is a Japanese multinational photography and imaging company headquartered in Tokyo.

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Fujifilm FinePix

The Fujifilm FinePix products are a line of digital cameras produced by Fujifilm.

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Infrared radiation (IR) is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore generally invisible to the human eye (although IR at wavelengths up to 1050 nm from specially pulsed lasers can be seen by humans under certain conditions). It is sometimes called infrared light.

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Instant camera

The instant camera is a type of camera which uses self-developing film to create a chemically developed print shortly after taking the picture.

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Konica C35 AF

The Konica C35 AF was the first mass-produced autofocus camera.

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Light-field camera

A light field camera, also known as plenoptic camera, captures information about the light field emanating from a scene; that is, the intensity of light in a scene, and also the direction that the light rays are traveling in space.

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List of Nikon F-mount lenses with integrated autofocus motor

The following list of Nikon F-mount lenses with integrated autofocus motor includes only Nikon F-mount lenses which fully autofocus in all modes of all Nikon F-mount digital single-lens reflex cameras with and also without an autofocus motor.

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Live preview

Live preview is a feature that allows a digital camera's display screen to be used as a viewfinder.

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Macro photography

Macro photography (or photomacrography or macrography, and sometimes macrophotography), is extreme close-up photography, usually of very small subjects and living organisms like insects, in which the size of the subject in the photograph is greater than life size (though macrophotography technically refers to the art of making very large photographs).

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Manual focus override

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.

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Metering mode

In photography, the metering mode refers to the way in which a camera determines exposure.

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Minolta A-mount system

The Minolta A-mount camera system was a line of photographic equipment from Minolta.

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Minolta Maxxum 7000

The Minolta MAXXUM 7000 (7000 AF in Europe and α-7000 in Japan) 35mm SLR camera was introduced in February 1985.

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Mirrorless interchangeable-lens camera

A mirrorless interchangeable lens camera (MILC) features a single, removable lens and uses a digital display system rather than an optical viewfinder.

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(or), also known just as Nikon, is a Japanese multinational corporation headquartered in Tokyo, Japan, specializing in optics and imaging products.

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Nikon 1 series

The Nikon 1 series are high-speed mirrorless interchangeable-lens cameras with 60 frames per second (fps) continuous shooting speed, using Nikon 1-mount lenses and announced on 21 September 2011.

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Nikon D2X

The Nikon D2X is a 12.4-megapixel professional digital single-lens reflex camera (DSLR) that Nikon Corporation announced on September 16, 2004.

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Nikon DX format

The Nikon DX format is an alternative name used by Nikon corporation for APS-C image sensor format being approximately 24x16 mm.

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Nikon F3

The Nikon F3 was Nikon's third professional single-lens reflex camera body, preceded by the F and F2. Introduced in 1980, it had manual and semi-automatic exposure control whereby the camera would select the correct shutter speed (aperture priority automation). The Nikon F3 series cameras had the most model variations of any Nikon F camera. It was also the first of numerous Nikon F-series cameras to be styled by Italian designer Giorgetto Giugiaro, and to include a red stripe on the handgrip – a feature that would later become (with variants of stripes and various other shapes) a signature feature of many Nikon cameras. The F2AS was a current model when the F3 was introduced, and for a while both were sold concurrently. The earlier Nikons had developed such a sterling reputation for extreme ruggedness and durability that many Nikon F and F2 owners were initially reluctant to transition to the new F3 from the F2 series. The F3 was superseded by the F4 in 1988 and the F5 in 1996. Despite being superseded by the newer cameras, it remained in production through to 2001, with over 751,000 F3s produced through September 1992. It continues to be the longest running professional grade Nikon SLR. Long after production ceased, new bodies in boxes were available throughout the world, so an exact production number is not readily available.

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Open-loop controller

In an open-loop controller, also called a non-feedback controller, the control action from the controller is independent of the "process output", which is the process variable that is being controlled.

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Optics is the branch of physics which involves the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it.

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Passivity (engineering)

Passivity is a property of engineering systems, used in a variety of engineering disciplines, but most commonly found in analog electronics and control systems.

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is a brand name used primarily by Japanese multinational imaging and electronics company Ricoh for cameras, sport optics (including binoculars and rifle scopes), and CCTV optics.

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Pentax (lens)

Pentax lenses were first badged as Takumar.

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Pentax ME F

The Pentax ME F was an amateur level, interchangeable lens, 35 mm film, single-lens reflex (SLR) camera.

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Photokina (rendered in the promoters' branding as "photokina") is a trade fair held in Europe for the photographic and imaging industries.

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Point-and-shoot camera

A point-and-shoot camera, also known as compact camera, is a still camera designed primarily for simple operation.

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A polarizer or polariser is an optical filter that lets light waves of a specific polarization pass through while blocking light waves of other polarizations.

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Polaroid Corporation

Polaroid is an American company that is a brand licensor and marketer of its portfolio of consumer electronics to companies that distribute consumer electronics and eyewear.

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Polaroid SX-70

The SX-70 is a folding single lens reflex Land camera which was produced by the Polaroid Corporation from 1972 to 1981.

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A rangefinder is a device that measures distance from the observer to a target, in a process called ranging.

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Red-eye effect

The red-eye effect in photography is the common appearance of red pupils in color photographs of the eyes of humans and several other animals.

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is a Japanese multinational imaging and electronics company.

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Samsung NX300

The Samsung NX300 is a mirrorless interchangeable lens digital camera a part of Samsung NX series and a successor to Samsung NX210.

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In the broadest definition, a sensor is a device, module, or subsystem whose purpose is to detect events or changes in its environment and send the information to other electronics, frequently a computer processor.

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Shutter (photography)

In photography, a shutter is a device that allows light to pass for a determined period, exposing photographic film or a light-sensitive electronic sensor to light in order to capture a permanent image of a scene.

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Single-lens reflex camera

A single-lens reflex camera (SLR) is a camera that typically uses a mirror and prism system (hence "reflex" from the mirror's reflection) that permits the photographer to view through the lens and see exactly what will be captured.

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is a Japanese multinational conglomerate corporation headquartered in Kōnan, Minato, Tokyo.

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Sony Alpha 700

The Sony α700 (DSLR-A700) was the second model launched in the Sony α series of APS-C sensor digital single-lens reflex cameras, following the α100, with several improvements over the latter.

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Sony Alpha 850

The α850 (DSLR-A850) was Sony's second full-frame digital SLR, introduced on 27 August 2009.

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Sony Alpha 900

The α900 (DSLR-A900) is a full-frame digital SLR camera, produced by Sony.

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Spherical aberration

Spherical aberration is an optical effect observed in an optical device (lens, mirror, etc.) that occurs due to the increased refraction of light rays when they strike a lens or a reflection of light rays when they strike a mirror near its edge, in comparison with those that strike close to the centre.

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Stepper motor

A stepper motor or step motor or stepping motor is a brushless DC electric motor that divides a full rotation into a number of equal steps.

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Super CCD

Super CCD is a proprietary charge-coupled device that has been developed by Fujifilm since 1999.

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A teleconverter (sometimes called tele extender) is a secondary lens which is mounted between the camera and a photographic lens.

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Through-the-lens metering

In photography, through-the-lens (TTL) metering refers to a feature of cameras whereby the intensity of light reflected from the scene is measured through the lens; as opposed to using a separate metering window or external hand-held light meter.

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Time of flight

Time of flight (TOF) is a property of an object, particle or acoustic, electromagnetic or other wave.

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In trigonometry and geometry, triangulation is the process of determining the location of a point by forming triangles to it from known points.

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Ultrasonic motor

An ultrasonic motor is a type of electric motor powered by the ultrasonic vibration of a component, the stator, placed against another component, the rotor or slider depending on the scheme of operation (rotation or linear translation).

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Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing.

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[1] https://en.wikipedia.org/wiki/Autofocus

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