本国际标准规定了 _120号和220号胶片的尺寸以及两者通用的线轴的尺寸， _120号胶卷的衬纸尺寸，220号胶卷的导纸和尾纸尺寸，以及 用于将这些纸张粘贴到胶片上的粘贴带的位置， _在第一张图像的前缘前面和后缘后面所需的最小胶片长度 最后一张图片 _背衬纸和拖尾纸上的标记，用于识别预期的光整加工过程。

This International Standard provides specifications for _ dimensions of 120-size and 220-size films and of the spools common to both, _ dimensions of the backing paper for 120-size film and the leader and trailer paper for 220-size film, as well as the placement of the paster tape used for attaching these papers to the films, _ minimum length of film required in front of the leading edge of the first image and behind the trailing edge of the last image, and _ markings on the backing paper and the trailer-paper for identification of the intended photofinishing process.