About: http://webisa.webdatacommons.org/77154837

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 bought mine for $39 off eBay, including the adapter, but you can get an adapter (M42 lens to Nikon) for less than $10 new.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com