Exposure range

Exposure range

In photography, exposure range is one of several types of dynamic range:

* The "Light sensitivity range" of photographic film, paper, or digital camera sensors.
* The "luminosity range" of a scene being photographed.
* The "opacity range" of developed film images
* The "reflectance range" of images on photographic papers.

A graduated neutral density filter can be used to control exposure range.

The exposure range of a device is usually expressed in stops, which are equivalent to log_{2} (c) where "c" is the medium or device's contrast ratio. For example, average Digital Video (DV) has a contrast ratio of 45:1, so its exposure range is roughly 5.5 stops. Film has an exposure range of approximately 14 stops, currently the highest in motion picture mediums.

See also

* Exposure latitude
* High dynamic range imaging

External links

* [http://www.dpreview.com/learn/?/Glossary/Digital_Imaging/dynamic_range_01.htm Dynamic Range of Sensors]


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