About: http://webisa.webdatacommons.org/232988465

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	This problem seldom occur on f/1.8 lenses like the Canon 85mm f/1.8.So far, no other brand except Sigma has made an 18-35mm f/1.8.
http://www.w3.org/ns/prov#wasQuotedFrom	dpreview.com