Anamorphic Format Provia 100F film container denotes its speed as ISO 100/21°

Anamorphic Format: “Slow film” redirects here. For the genre of films, see slow cinema. 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 ISOsystem. A closely related ISO system is used to describe the relationship between exposure and output image lightness in digital cameras. Relatively insensitive film, with … More Anamorphic Format Provia 100F film container denotes its speed as ISO 100/21°