Self-timer

The self-timer is also used to reduce camera shake when taking photographs in low light or with long (telephoto) lenses.

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.

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 (Pre-drive).

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