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From Wikipedia, the free encyclopedia

A manual self-timer
A manual self-timer
A manual self-timer mounted on a film camera
A manual self-timer mounted on a film camera
A self-timer button on a Canon digital camera
A self-timer button on a Canon digital camera

A self timer is a device on a camera that gives a delay between pressing the shutter release and the shutter's firing. It is most commonly used let photographers to take a photo of themselves (often with family), hence the name.

The self-timer is also used to reduce camera shake when taking photographs in low light or with long (telephoto) lenses. The timer's delay gives the photographer time to steady the camera before the shutter fires, and allows vibrations from the mirror flipping up (on SLRs) to die out. It also eliminates any photographer-induced camera motion when the shutter button is pressed.

Most modern cameras with a self-timer flash a light during the countdown, emit a beeping sound, or both. These warnings generally increase in speed or intensity during the last few seconds, to warn that the shutter is about to fire.

The most common delay is ten seconds. Some cameras also have a two-second setting. A few cameras provide continuously variable delay.

Single-lens reflex cameras have to flip up the viewing mirror before the picture is taken, which can also shake the camera. It is not uncommon for a camera to combine mirror lockup with the two-second self-timer mode, which reduces camera shake still further.

Alternatives to the self-timer include a cable release, and infrared or radio remote control.

On some leaf-shutter cameras, the self-timer mode is selected with the flash-sync lever, and is marked V, for the German word Vorlaufwerk.

See also

This page was last edited on 24 November 2020, at 12:16
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