About: http://webisa.webdatacommons.org/59298897

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 presume this is so one can stack filters without worry for vignetting, but it could also be because some parts such as the hood and bayonet are shared with the similarly martini-like 4/18 Distagon.
http://www.w3.org/ns/prov#wasQuotedFrom	mingthein.com