About: http://webisa.webdatacommons.org/274165175

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	viewfinder DOF is pretty useless).So for the past few years I have been amazed to see all the convoluted thinking that comes from working with f/number when considering anything other than exposure.
http://www.w3.org/ns/prov#wasQuotedFrom	dpreview.com