About: http://webisa.webdatacommons.org/397922424

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	For auto-focusing (AF) technologies in a photographic device such as a still camera or video camera, various approaches have been proposed hitherto.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com