About: http://webisa.webdatacommons.org/50783744

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The manual switch 517 can be switched by a photographer in relation to the size of the gate 515, and enables the photographer to designate a light measuring area such as a center-weighted measuring area or a spot measuring area.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com