THE SHUTTER

The Camera has a device that determines the length of time film or a digital sensor is exposed to light, this device is called the Shutter.
Some shutters are built into the lens, some are built into the Camera body, in front of the Film Plane (Film cameras) or light sensitive electronic sensor (Digital cameras), all are activated by depressing the shutter release button, Shutter speeds can be as slow as 30 sec. and as fast as 1/4000 sec.