About: http://webisa.webdatacommons.org/398684423

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	I???ve read elsewhere that third-party lens makers are forced to reverse engineer the mounting and focusing systems of camera makers such as Canon and Nikon.
http://www.w3.org/ns/prov#wasQuotedFrom	petapixel.com