About: http://webisa.webdatacommons.org/312658374

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	The double check is one reason (contrast AF is not as fast or accurate, especially in low light, as the phase matching AF), focus noise another, and processing capacity the third.
http://www.w3.org/ns/prov#wasQuotedFrom	dpreview.com