International Standard
ISO 517:2008
Photography — Apertures and related properties pertaining to photographic lenses — Designations and measurements
Reference number
ISO 517:2008
Edición 3
2008-03
International Standard
Vista previa
p
ISO 517:2008
50089
No disponible en español
Publicado (Edición 3, 2008)
Esta norma se revisó y confirmó por última vez en 2021. Por lo tanto, esta versión es la actual.

ISO 517:2008

ISO 517:2008
50089
Formato
Idioma
CHF 63
Convertir Franco suizo (CHF) a tu moneda

Resumen

ISO 517:2008 pertains to apertures and related properties of photographic lenses affecting the illuminance at the centre of the image.

ISO 517:2008 specifies aperture markings for all types of lenses used in still cameras, and gives tolerances for the stop numbers. It also defines aperture stop, entrance pupil, focal length, relative aperture and stop numbers, and gives methods for their measurement or determination.

ISO 517:2008 applies only to lenses focused on objects at infinity; that is, at least 50 times the focal length of the lens.

Informaciones generales

  •  : Publicado
     : 2008-03
    : Norma Internacional confirmada [90.93]
  •  : 3
     : 8
  • ISO/TC 172/SC 1
    37.040.10 
  • RSS actualizaciones

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)