About: http://webisa.webdatacommons.org/93340577

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	If I am not mistaken, doubling film speed, e.g. from ISO 100 to ISO 200, gains one f-stop.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com