About: http://webisa.webdatacommons.org/62499918

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	Rest assured that your 50 1.4 is sharper than the 17-40L you are considering (I have both, and the 17-40L is a good value used if you need a very wide angle on a FF).
http://www.w3.org/ns/prov#wasQuotedFrom	canonrumors.com