Wikidata:Property proposal/f-number
f-number edit
Originally proposed at Wikidata:Property proposal/Natural science
| Description | ratio 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. |
|---|---|
| Represents | f-number (Q862169) |
| Data type | Quantity |
| Domain | photographs |
| Allowed units | none |
| Example 1 | Dülmen, North Rhine-Westphalia, Germany (Q34788400) -> 13 |
| Example 2 | file:Kew fountain (long exposure).jpg -> 10 |
| Example 3 | file:Kew fountain (short exposure).jpg -> 5.6 |
Motivation edit
Useful for Wikidata in general and maybe Commons media entities (Add your motivation for this property here.) --- Jura 09:54, 11 May 2019 (UTC)
Discussion edit
Support David (talk) 06:30, 12 May 2019 (UTC)- Support.--Vulphere 05:47, 26 May 2019 (UTC)
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