Sequence viewing > Index - Cameras - lenses - optics - Resource - © Lloyd Godman

Film - Digital

What is the  function of  the camera shutter?

In any camera, the shutter is like a blind that opens and closes to let the light through. So the purpose of the shutter is to control the length of time the light reaches the CCD or film. While most cameras have shutter controls that are measured in fractions of seconds, to a few seconds,  exposures can be made in minutes and even hours or at the other end of the scale thousandths of a second.

The exposure the sensitive material receives becomes a combination of the shutter speed and the aperture setting which controls the amount of light falling on the film or CCD.

Faster shutter speed

Slower shutter speed



Want to learn more? - do a workshop or one on one with Lloyd Godman