About: http://webisa.webdatacommons.org/311359255

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	A zoom lens is an optical system, in which a part of lenses or lens groups that compose a lens system moves along an optical axis, whereby it is possible to continuously change imaging magnification.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com