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Wikidata:Property proposal/f-number

< Wikidata:Property proposal


Originally proposed at Wikidata:Property proposal/Natural science

   Done: f-number (P6790) (Talk and documentation)
Descriptionratio of the system's focal length to the diameter of the entrance pupil. Sample: 4 (generally written "ƒ/4") for a lens with 200 mm focal length using an entrance pupil diameter of 50 mm.
Representsf-number (Q862169)
Data typeQuantity
Allowed unitsnone
Example 1Dülmen, North Rhine-Westphalia, Germany (Q34788400) -> 13
Example 2file:Kew fountain (long exposure).jpg -> 10
Example 3file:Kew fountain (short exposure).jpg -> 5.6


Useful for Wikidata in general and maybe Commons media entities (Add your motivation for this property here.) --- Jura 09:54, 11 May 2019 (UTC)


  •   Support David (talk) 06:30, 12 May 2019 (UTC)
  •   Support.--Vulphere 05:47, 26 May 2019 (UTC)