Important Terms to Remember:
Aperture – The aperture is the device inside the lens of your camera that adjusts larger or smaller to control the amount of light that enters the lens.
Shutter – The shutter is the device inside the camera that opens and closes to allow the incoming light to expose the film.
ISO – The ISO rating of film describes its sensitivity to light. Higher numbers on this rating mean that the film is more sensitive to light and will expose faster than lower numbered ratings.
John M. Setzler, Jr