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Normas DIN – AENOR
DIN ISO 517:2008-07

DIN ISO 517:2008-07

Photography - Apertures and related properties pertaining to photographic lenses - Designations and measurements (ISO 517:2008) / Note: Date of issue 2008-07-07

Photographie - Ouvertures et grandeurs associées relatives aux objectifs photographiques - Désignations et mesurages (ISO 517:2008) / Attention: Date de parution 2008-07-07

Photographie - Öffnungsverhältnisse und verwandte Größen bei Photoobjektiven - Bezeichnungen und Messungen (ISO 517:2008) / Achtung: Erscheinungsdatum 2008-07-07

Fecha Anulación:
2019-05 /Withdrawn
Equivalencias internacionales:

ISO 517 (2008-03)

Relación con otras normas DIN:

Reemplazada por: DIN ISO 517:2009-05

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.
Aperture angles, Aperture (optics), Camera lenses, Cameras, Definitions, Diaphragms, F-number, Lens apertures, Lenses, Limits (mathematics), Marking, Mathematical calculations, Measuring techniques, Openings, Photo technology, Photographic equipment, Photographic lenses, Photography, Screens, Symbols
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