About: http://webisa.webdatacommons.org/9880054

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	Some working distance is an advantage, but not necissary.A facebook friend is selling a Sigma 105, apparantly MF only.
http://www.w3.org/ns/prov#wasQuotedFrom	dpreview.com