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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.