About: http://webisa.webdatacommons.org/376506461

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	This method could be particularly applicable to video cameras as an improvement on the internal neutral density filters found in professional camcorders, which allow more flexibility in using wider apertures and longer exposures.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org