This International Standard specifies the following:
_ dimensions of film lengths;
_ latent-image frame numbering;
_ latent-image digital bar-codes to identify the film DX number;
_ dimensions of daylight-loading film magazines for use with 135-size cameras;
_ a magazine bar-code that identifies the film's DX number as well as the number of exposures;
_ camera auto-sensing areas, which provide an electrically readable encodement of film speed, number of
exposures, and recommended exposure latitude for use with appropriately designed cameras;
_ an information panel on which the film identification, speed and number of exposures are visible through a
window in the back of appropriately designed cameras;
_ film pull-out force specification;
_ film-spool attachment strength specification.
This International Standard is not intended to apply to "bulk" 35-mm film used for reloading into 135-size
magazines, nor to the reloadable magazines themselves. Also, this standard does not apply to 135-size film and
magazines that are used in single-use camera applications.