Digital SLR Camera Basics



An abbreviation of “Exposure Value,” a unit used to measure exposure. Higher values are appropriate for brighter lighting: the higher the value, the less light that falls on the image sensor. An EV of 1 corresponds to an aperture of f/1.4 at a shutter speed of 1 s.


The act of exposing the image sensor to light; the amount of light to which the sensor is exposed (sometimes stated as an exposure value).

exposure compensation

The act of modifying exposure from the optimal value selected by the camera, making photographs brighter or darker.

exposure indicator

A display showing the amount by which a photograph recorded at the current aperture and shutter speed will deviate from the optimal exposure selected by the camera.

exposure program

A graph showing the combinations of shutter speed and aperture that are automatically selected by the camera.