If each shutter has two states then 16.
Shutter.
Shutter speed is how fast your shutter opens and closes to take a picture on your camera. Shutter speed also has a lot to do with exposure. The higher the shutter speed (1/2000 example) the less light.
To use exposures, it is best to know what they are. Exposures are combinations of film speed, shutter speed, and aperture. To use them best, a photographer should use the results (via the camera's light meter) to see if the combinations will create the desired light in camera's sensor (digital) or film.
shutter release
its not its called a shutter
The plural form for the noun shutter is shutters.
The ISBN of Shutter Island is 0688163173.
Shutter was released on 03/21/2008.
The Production Budget for Shutter was $8,000,000.
The Finnish title for the movie "Shutter Island" is "Shutter Island - saarella".
A quality hurricane shutter can be purchased from many retailers. I would go with Shutter Shack.com.
Leaf shutter and Focal Plane shutter.