DIN-ISO-517 Complete Document History
Photography - Apertures and related properties pertaining to photographic lenses - Designations and measurements

Complete Current Edition:
   2009 EDITION - ENGLISH VERSION OF DIN-ISO-517 - May 1, 2009

Obsolete Revision Information:
   2002 EDITION - ENGLISH VERSION OF DIN-ISO-517 - July 1, 2002