BS ISO 1754:2010 Photography. Cameras using 35 mm film and roll film. Dimensions of picture sizes
BS ISO 1754 is an International Standard which specifies the dimensions on the film of still picture sizes made with cameras in which the image dimensions are defined by the camera frame.
Panoramic image dimensions (13 mm ¥ 36 mm) of cameras featuring a mid-roll panoramic photo are not specified in this International Standard.