Film speed is the measure of a photographic film`s sensitivity to light, determined by sensitometry and measured on various numerical scales, the most recent being the ISO system. A closely related ISO system is used to measure the sensitivity of digital imaging systems. Relatively insensitive film, with a correspondingly lower speed index, requi....
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http://en.wikipedia.org/wiki/Film_speed
(from the article `speed`) in photography, any of those standards that indicate (1) the size of the lens opening, or aperture, (2) the duration of exposure, and (3) the ... The sensitivity or speed of a film determines how much light it needs to produce a given amount of silver on development. Sensitometry is the science ... [2 relat...
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http://www.britannica.com/eb/a-z/f/25
The relative sensitivity of film emulsion to light or radiation exposure; speed is inversely related to detail resolution. ... (05 Mar 2000) ...
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http://www.encyclo.co.uk/local/20973
A film's sensitivity to light, rated numerically so that it can be match to the camera's exposure control. Film speed ratings increase as the sensitivity of the film increases. Each time you double the film speed, half as much light is needed for correct exposure. Faster films need less light but they produce grainier pictures. Slower f...
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http://www.encyclo.co.uk/local/21048
The film's sensitivity to light. For example, an ISO 100 film requires twice as much light as an ISO 200 film.
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http://www.encyclo.co.uk/local/21469
Type: Term Definitions: 1. the relative sensitivity of film emulsion to light or radiation exposure; speed is inversely related to detail resolution.
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http://www.medilexicon.com/medicaldictionary.php?t=33352
A film's sensitivity to light, rated numerically so that it can be match to the camera's exposure control. Film speed ratings increase as the sensitivity of the film increases. Each time you double the film speed, half as much light is needed for correct exposure. Faster films need less light but they produce grainier pictures. Slower films have a ...
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http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
The sensitivity of a film to light, indicated by a number such as ISO 100. The higher the number, the more sensitive or faster the film. (ISO stands for International Standards Organization.) (see Fast film, Slow film& ISO)
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https://www.encyclo.co.uk/local/20176
The sensitivity to light for proper exposure of a given film stock. This is primarily a result of the size of the silver halides in the emulsion, the larger the grain, the less light is needed for exposure. Film stocks are generally spoken of as being fast or slow, a fast film having large grains and needing less light, a slow film having smaller g...
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https://www.encyclo.co.uk/local/21112
speed (def. 5a).
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https://www.infoplease.com/dictionary/film-speed
No exact match found.
