About: http://webisa.webdatacommons.org/383614440

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	Their quality has never been improved upon, and I actually think the latest plastic AF versions do not perform as well.The second alternative is to purchase a third party lens such as Sigma, Tamron, Tokina, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	betterphoto.com