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Audio engineers use dynamic range to describe the ratio of the amplitude of the loudest possible undistorted signal to the noise floor, say of a microphone or loudspeaker. [18] Dynamic range is therefore the signal-to-noise ratio (SNR) for the case where the signal is the loudest possible for the system. For example, if the ceiling of a device ...
High dynamic range (HDR), also known as wide dynamic range, extended dynamic range, or expanded dynamic range, is a signal with a higher dynamic range than usual. The term is often used in discussing the dynamic ranges of images , videos , audio or radio .
In photography, exposure range may refer to any 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.
Dynamic range. Expresses the luminance range of a scene, a captured image or the maximum range of luminance that a camera can successfully capture at one setting. It is often used imprecisely, but can sometimes be quantified as a ratio. [9] The term contrast ratio may be preferred for the luminance range in a scene. [14] DSC: Digital Still ...
A more technical approach recognises that a photographic film (or sensor) has a physically limited useful exposure range, [7] sometimes called its dynamic range. [8] If, for any part of the photograph, the actual exposure is outside this range, the film cannot record it accurately.
Tone mapped high-dynamic-range (HDR) image of St. Kentigern's Church in Blackpool, Lancashire, England. In photography and videography, multi-exposure HDR capture is a technique that creates high dynamic range (HDR) images (or extended dynamic range images) by taking and combining multiple exposures of the same subject matter at different exposures.
In radiography, exposure latitude and dynamic range are equivalent. [2] [3] It is the range of exposures that can be recorded as useful densities on a radiographic film for interpretation. [4] In film-screen radiography, exposure latitude range from 10:1 to 100:1. In digital chest radiography, exposure latitude can more than 100:1.
Dynamic range is a significant factor in the quality of both the digital and emulsion images. Both film and digital [dubious – discuss] sensors exhibit non-linear responses to the amount of light, and at the edges of the dynamic range, close to underexposure and overexposure the media will exhibit particularly non-linear responses. The non ...