Historical
ISO 518:1977
Photography -- Camera accessory shoes, with and without electrical contacts, for photoflash lamps and electronic photoflash units
The dimensions given are basic for the solid shoe. They may be changed when the shoe is equipped with springs or other means for holding the accessory foot tightly or maintaining good electrical contact, provided interchangeability and functions are not affected.
CONTENT PROVIDER
International Organization for Standardization [iso]
International Organization for Standardization [iso]