Photography Apertures and related properties pertaining to photographic lenses Designations and measurements

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

03-10-2008

Publisher

International Organization for Standardization

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.

DevelopmentNote	Supersedes ISO/DIS 517. (03/2008)
DocumentType	Standard
Pages	8
PublisherName	International Organization for Standardization
Status	Current
Supersedes	ISO 517:1996 ISO 517:1996/Cor 1:2006

Standards	Relationship
BS ISO 517:2008	Identical
DIN ISO 517:2009-05	Identical

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