About: http://webisa.webdatacommons.org/7841414

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	The weight is a huge factor over the previous versions of the 400mm f2.8 L lenses.. yes, 3 lbs is very noticeable,...and I often shoot hand held with this lens.. & I am not the biggest / strongest guy out there either..
http://www.w3.org/ns/prov#wasQuotedFrom	fredmiranda.com