About: http://webisa.webdatacommons.org/228468959

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	Stopping down to f/4 offers very marginal improvement, the edges are a little sharper, and at f/5.6 there is a slight drop as diffraction starts to harm image detail.
http://www.w3.org/ns/prov#wasQuotedFrom	itreviews.com