About: http://webisa.webdatacommons.org/46455404

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	Maybe another one, too?And to the original question, I will agree that third party lenses are more of a compromise, rather than some of them being particularly better than a Canon or Nikon equivalent.
http://www.w3.org/ns/prov#wasQuotedFrom	canonrumors.com