ISO 518:2006规定了闪光灯和电子闪光装置用带和不带电触点的相机附件鞋的尺寸。给出的尺寸是实心鞋的基本尺寸。当附件鞋配有弹簧或其他装置，用于紧紧固定附件脚或保持良好的电气接触时，可以在不影响其互换性和功能的范围内改变鞋的尺寸

ISO 518:2006 specifies the dimensions of camera accessory shoes, with and without electrical contacts, for photoflash lamps and electronic photoflash units. The dimensions given are basic for the solid shoe. When an accessory shoe is equipped with springs or other devices for holding the accessory foot tightly or maintaining good electrical contact, the dimensions of the shoe can be changed within the range in which their interchangeability and functions will not be affected