autofocus (AF)

autofocus (AF)

Available in cameras equipped with motorized focus, this feature provides automatic adjustment of the focus. AF operates by varying the focus to maximize the high frequency content of the central area of the picture by reference to high luminance and strong contrast elements. In some cameras, AF can be set to High or Low sensitivity modes. AF mode is not recommended for continuous 24-hour operation. See also One-push AF, Interval AF, Zoom triggered AF.

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Industry/Domain: Consumer electronics
Category: Video camera
Company: Sony
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auto-area autofocus (AF)

Photography; Professional photography

An autofocus (AF)-area mode in which the camera detects the subject and automatically selects the focus point.

autofocus (af) lamp

Photography; Professional photography

An indicator lamp that indicates whether or not the camera is able to focus using autofocus.

auto-servo autofocus (AF)

Photography; Professional photography

An autofocus mode that automatically selects between single-servo and continuous-servo autofocus.

autofocus (AF) area

Photography; Cameras & parts

The area in the frame on which the camera focuses. Cameras have multiple AF points which can be selected manually or automatically.

autofocus (AF) area mode

Photography; Cameras & parts

Determines how the camera selects the focus point or focus area for autofocus.

Boxcar

Tourism & hospitality; Video camera

closed railway freight van

PowerHAD

Consumer electronics; Video camera

PowerHAD is further improvement of the Hyper HAD CCD technology, where the microscopic lenses focus more light onto the light sensors thus increased sensitivity and reduced smear.

progressive scan

Consumer electronics; Video camera

CCD design that allows the acquisition of both odd and even fields at the same time. Progressive scan makes full vertical resolution possible in Donpisha mode.

restart / reset

Consumer electronics; Video camera

Special mode in which the CCD readout cycle is stopped and restarted in synchronization with an external event. In the Stop mode, the CCD still accumulates picture information.

RGB (Red, Green, Blue)

Consumer electronics; Video camera

The primary colors of light that produce a color video image. In video, RGB refers to a system in which these three primary colors are kept isolated and delivered from the source ...

RS-232C

Consumer electronics; Video camera

Serial data transmission standard for computers which can also be used to control camera functions.

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