Search results
Results from the WOW.Com Content Network
Dynamic range (abbreviated DR, ... a dynamic range of 90 dB. Change of sensitivity is achieved in part through adjustments of the iris and slow chemical changes ...
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 ...
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.
The dynamic range is much larger than fixed-point but at a cost of a worse signal-to-noise ratio. This makes floating-point preferable in situations where the dynamic range is large or unpredictable. Fixed-point's simpler implementations can be used with no signal quality disadvantage in systems where dynamic range is less than 6.02m.
The dynamic range capability of digital audio systems far exceeds that of analog audio systems. Consumer analog cassette tapes have a dynamic range of between 50 and 75 dB. Analog FM broadcasts rarely have a dynamic range exceeding 50 dB. [4] Analog studio master tapes can have a dynamic range of up to 77 dB. [5]
The measured dynamic range (DR) of a digital system is the ratio of the full scale signal level to the RMS noise floor. The theoretical minimum noise floor is caused by quantization noise. This is usually modeled as a uniform random fluctuation between − 1 ⁄ 2 LSB and + 1 ⁄ 2 LSB.
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.