Radiographic film which has inherent graininess characteristics of a coarse nature intended to increase the relative film speed.
Is film which has an emulsion that is very sensitive to light. These film have high ISO ratings.
Film with an emulsion that is very sensitive to light. Such films have high ISO ratings (i.e.: ISO1600). They are all, however, more grainy than there slower counterparts. (see Grain& ISO)
Film that requires relatively little light to record an image.
A film with high sensitivity to light, needing less light for proper exposure. Recommended for action and low-light light photography. Term normally applied to films with ISO 400 and higher.
High speed film, i.e. film that is more sensitive to light, meaning less light is needed to obtain a properly-exposed image.
Film with a high sensitivity to light, reflected in its high ISO rating--usually ISO 400 and above.
A fast film is generally considered to be 400 ASA or faster. Films can be purchased up to 3200 ASA, however fast films have more grain than their slower counterparts.