BS ISO 517:2008

$102.76

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

Published By	Publication Date	Number of Pages
BSI	2008	16

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Categories: 37.040.10 - Photographic equipment. Projectors, BSI

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Description

This International Standard pertains to apertures and related properties of photographic lenses affecting the illuminance at the centre of the image.

This International Standard 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.

This International Standard applies only to lenses focused on objects at infinity; that is, at least 50 times the focal length of the lens.

Additional information

Status	Confirmed
Pages	16
Publication Date	2008-06-30
ISBN	978 0 580 61341 8
Standard Number	BS ISO 517:2008
Title	Photography. Apertures and related properties pertaining to photographic lenses. Designations and measurements
Identical National Standard Of	ISO 517:2008
Descriptors	Lenses, Focal length measurement, Marking, Designations, Photographic equipment, Photographic lenses, Lens apertures, Camera lenses, Photography
Publisher	BSI
Committee	CPW/172
ICS Codes	37.040.10 - Photographic equipment. Projectors

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BS ISO 517:2008

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