About: http://webisa.webdatacommons.org/435492880

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	If you can only see one face of it then required dof would be very little. if the object is a sphere then the dof only needs to be 1/4 the diameter of the sphere, unless the object is transparent (glass).
http://www.w3.org/ns/prov#wasQuotedFrom	largeformatphotography.info