Noun
English Wikipedia has an article on:film speedWikipedia
film speed (plural film speeds)
(photography) A measure of a film's sensitivity to light; faster films needing shorter exposures
In addition, coded notches cut into the Super 8 film cartridge exterior allow the camera to recognize the film speed automatically. Source: Internet
Thus Kodak could solve the problem of higher speed (greater light sensitivity—see film speed ) which required larger grain and therefore more " grainy " images. Source: Internet
The color temperature of a film stock is generally indicated next to the film speed number — e.g. 500T stock is color film stock with an ASA of 500 and balanced for tungsten light; 250D would have an ASA of 250 and be balanced for daylight. Source: Internet
However Todd-AO has six channels instead of the four of Cinemascope and due to the wider stripes and faster film speed provides superior audio quality. Source: Internet
Their work enabled the first quantitative measure of film speed to be devised. Source: Internet