About: http://webisa.webdatacommons.org/236698663

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	I am unsure if this includes the 5D3 after the April firmware.All other bodies do not have this feature.My guess is that the lens is a f/2.8 but is actually slower in terms of t-stop.
http://www.w3.org/ns/prov#wasQuotedFrom	canonrumors.com