Shutter type of shutter principle and function

A shutter is a mechanical device used to control the exposure time of a photographic sensor or film. The shutter works in such a way that it is always closed in order to protect the sensor or film in the camera from exposure. After setting the shutter speed, by pressing the camera's shutter release button, the camera will allow the light passing through the lens to give the sensor or film in the camera the correct exposure for the time the shutter is open and closed.

The shutter is made of metal, fabric, or other synthetic material, and is driven by a mechanical or electrical mechanism that controls the opening time of the shutter, using either mechanical or electrical energy. Distinguished by camera type, shutter is divided into inter-mirror shutter and focal plane shutter. First of all, the biggest difference between the two types of shutter is the location of the different, inter-mirror shutter placed between the lens unit, while the focal plane shutter is located inside the camera, just in front of the film, because it is located in the plane of focus, and therefore named.