Basic Camera Controls and Exposure (Photography Notes)

EXPOSURE is the amount of light that reaches the film as it is controlled by the camera with the APERTURE and the SHUTTER SPEED.

The amount of light permitted to pass through a lens is controlled by an Aperture, it is usually an adjustable diaphragm within the lens. The smaller the Aperture is set the less light reaches the film, the larger the Aperture is set the lighter will reach the film.

The Shutter Speed controls the length of the film or sensor's time which exposed to light. The length of time the shutter is open is named 'Shutter Speed', as you can see it's collaborated in fractions of seconds as the image shown above, would represent it.

The image shown above represents what each fractions of the shutter speed on a DSLR camera would look like in pictures.