About: http://webisa.webdatacommons.org/232430985

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	However, preferably an imaging system 22 is used, the focal length of which is adjustable, e.g. from about 10 to about 50 cm.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com