Property talk:P2151

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focal length
focal length of lens (telescope, etc.)

Represents	focal length (Q193540)
Data type	Quantity
Domain	lenses, cameras with built-in lenses, etc. (note: this should be moved to the property statements)
Allowed values	items for specific formats (note: this should be moved to the property statements)
Allowed units	metre (Q11573) or millimetre (Q174789)
Example	Hubble Space Telescope (Q2513) → 57.6 metre
Source	According to this template: infobox, Freebase: https://www.freebase.com/digicams/digital_camera/wide_focal_length https://www.freebase.com/digicams/digital_camera/tele_focal_length According to statements in the property: https://www.freebase.com/digicams/digital_camera/wide_focal_length When possible, data should only be stored as statements
Tracking: usage	Category:Pages using Wikidata property P2151 (Q38537165)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Minimum and maximum Items with highest numeric value Items with lowest numeric value User:Laboramus/Units/P2151 (Units used) Database reports/Constraint violations/P2151 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 1,451 Main statement 1,307 90.1% of uses Qualifier 144 9.9% of uses

[create Create a translatable help page (preferably in English) for this property to be included here]

Units: “metre (Q11573), millimetre (Q174789)”: value unit must be one of listed. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2151#Units

This property is being used by: en:Template:Infobox telescope hy:Կաղապար:Տեղեկաքարտ Աստղադիտարան id:Templat:Infobox teleskop ja:Template:望遠鏡 pt:Predefinição:Info/Telescópio/Testes, pt:Predefinição:Info/Telescópio bh:टेम्पलेट:Infobox telescope cy:Nodyn:Infobox telescope, cy:Nodyn:Gwybodlen telesgop/Wicidata lt:Šablonas:Infolentelė teleskopas ur:سانچہ:خانہ معلومات دوربین zh:Template:Infobox Telescope ca:Plantilla:Infotaula de telescopi espacial, ca:Plantilla:Infotaula edifici, ca:Plantilla:Infotaula vehicle espacial, ca:Plantilla:Infotaula vehicle espacial/prova, ca:Plantilla:Infotaula vol espacial, ca:Plantilla:Infotaula vol espacial/prova be-x-old:Шаблён:Тэлескоп cs:Šablona:Infobox - kosmické těleso eu:Txantiloi:Teleskopio infotaula vec:Modeło:Infobox de Voło spasiałe ga:Teimpléad:WD Bosca Sonraí Taisteal Spáis be-tarask:Шаблён:Тэлескоп gv:Clowan:WD Kishtey Fys Arraghey Spoar Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)