In combination with variation of shutter speed , the aperture size will regulate the film 's or image sensor 's degree of exposure to light .
The aperture is changed along with the shutter speed to control the amount of light that enters the camera . This amount of light is called the exposure .
The aperture is changed along with the shutter speed to control the amount of light that enters the camera . This amount of light is called the exposure .
Simplification: In combination with variation of shutter speed , the aperture size will regulate the film 's or image sensor 's degree of exposure to light . Output: