ISO-516 Complete Document History
Camera shutters - Timing - General definition and mechanical shutter measurements

Complete Current Edition:
   4TH EDITION - General definition and mechanical shutter measurements - April 1, 2019

Obsolete Revision Information:
   3RD EDITION - Photography -- Camera shutters -- Timing - Aug. 15, 1999
   2ND EDITION - FOR PHOTOGRAPHY - CAMERA SHUTT - Dec. 15, 1986