ISO 517:1996
w
ISO 517:1996
4579

Abstract 

Pertains to apertures and related properties of photographic lenses affecting the illuminance at the centre of the image. Does apply only to lenses focused on objects at infinity; that is, at least 50 times the focal length of the lens.


General information 

  •  :  Withdrawn
     : 1996-12
  •  : 2
     : 8
  •  : ISO/TC 172/SC 1 Fundamental standards
  •  :
    37.040.10 Photographic equipment. Projectors

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information.