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Hydrogen Technologies Standards form the basic framework for market ramp-up
More information
Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
More information

Standards [CURRENT]

ISO 517
Photography - Apertures and related properties pertaining to photographic lenses - Designations and measurements

Title (German)

Photographie - Öffnungsverhältnisse und verwandte Größen bei Photoobjektiven - Bezeichnungen und Messungen

Responsible national committee

NA 027-01-02-01 AK - General optical test methods

Responsible international committee

ISO/TC 172/SC 1/WG 1 - General optical test methods

Edition 2008-03

Original language English

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

ISO 517 Photography - Apertures and related properties pertaining to photographic lenses - Designations and measurements

Responsible national committee

Responsible international committee

Lisa Henigin

Want to learn more?

ISO 517
Photography - Apertures and related properties pertaining to photographic lenses - Designations and measurements