本国际标准规定了16 mm电影胶片上W型摄像机光圈产生的图像区域的尺寸和位置，用于放大为非变形35 mm电影胶片，图像纵横比为1.66:1或更大。 本国际标准还规定了35mm内负片或复制负片上相应图像区域的尺寸和位置，以及16mm W型原稿光学打印的放大率。

This International Standard specifies the dimensions and location of the image area produced by the camera aperture Type W on 16 mm motion-picture film intended for enlargement to non-anamorphic 35 mm motion-picture film with an image aspect ratio of 1,66:1 or greater. This International Standard also specifies the dimensions and location of the corresponding image area on a 35 mm internegative or duplicate negative and the enlargement ratio in optical printing from 16 mm Type W originals.