film speed(redirected from ISO 5800)
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the relative sensitivity of film emulsion to light or radiation exposure; speed is inversely related to detail resolution.
Farlex Partner Medical Dictionary © Farlex 2012
The sensitivity of a photographic medium (e.g., a radiograph) to light or radiation. The film speed is determined by: the size of its silver halide crystals; the thickness of the emulsion; and the presence of radiosensitive dyes. Films are described as “fast” if the film requires little radiation to produce an image and “slow” if more radiation is needed.
Medical Dictionary, © 2009 Farlex and Partners
film speed(film spēd)
Relative sensitivity of film emulsion to light or radiation exposure; is inversely related to detail resolution.
Medical Dictionary for the Dental Professions © Farlex 2012