Exposure (photography)
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In photography, exposure is the amount of light per unit area reaching a frame of photographic film or the surface of an electronic image sensor. It is determined by exposure time, lens f-number, and
White chair: Deliberate use of overexposure for aesthetic purposes
Two similar images, one taken in auto mode (underexposed), the other with manual settings
Buildings and trees photographed with an autoexposure time of 1⁄200 s
A street view of Taka-Töölö, Helsinki, Finland, during a very sunny winter day. The image has been deliberately overexposed by +1 EV to compensate for the bright sunlight and the exposure time calculated by the camera's program automatic metering is still 1⁄320 s.
Exposure value
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In photography, exposure value is a number that represents a combination of a camera's shutter speed and f-number, such that all combinations that yield the same exposure have the same EV. Exposure va
Exposure (photography)
…determined by exposure time, lens f-number, and scene luminance. Exposure is measured in units of lux-seconds (symbol lx⋅s), and can be computed from exposure value (EV) and scene luminance in a specified region. An "exposure" is a single shutter cycle. For example, a long exposure refers to a single, long shutter…
Fast shutter speed (short exposure time) of a breaking wave
Slow shutter speed (long exposure time) of a breaking wave
Extended exposure time of 26 seconds
Robert Kaufmann's posographe or exposure calculator from 1922