About: http://webisa.webdatacommons.org/420321650

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 ???normal??? lens is a lens with an equivalent focal length between 45 and 50mm (or crop-sensor equivalents) ??? some slightly wider, some slightly longer.
http://www.w3.org/ns/prov#wasQuotedFrom	thephoblographer.com