127 film was a roll film format for still photography, introduced by Kodak in 1912 for use in the folding ‘Vest Pocket Kodak’. Other camera manufacturers also made Vest Pocket-format cameras, and so 127 film at the time was often labeled ‘Vest Pocket Film’. It was most commonly used in amateur cameras (such as the Kodak Brownie range), and most 127 negatives were contact-printed rather than enlarged.
The roll is 46mm wide, giving images of 4×3, 4×4 or 4x6cm (the backing paper had markings for 4×4 and 4×6 image formats), placing it between 135 and 120 films in terms of negative size. With the 4×4 image size, each roll gave 12 exposures.
It enjoyed widespread use until the 1960s when its usage declined with the popularity of 135 film, and newer cartridge-based films such as 126.
Kodak stopped making 127 cameras in 1970, and stopped making 127 film in 1995, but it is still produced in small quantities for niche use.