About: http://webisa.webdatacommons.org/287787070

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	This as a major factor in the so called "speed of a lens, but other factors also influence speed, such as the amount and quality of glass the light has to pass through before it reaches the sensor.
http://www.w3.org/ns/prov#wasQuotedFrom	dpreview.com