Exposure range
From Wikipedia, the free encyclopedia
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 log2(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 11 stops, currently the highest in motion picture mediums.
