About: http://webisa.webdatacommons.org/367037406

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	A drop-in 46mm filter holder in the rear part of the lens barrel, which can be rotated to facilitate the use of filters, including a polarising filter which comes included with the lens.
http://www.w3.org/ns/prov#wasQuotedFrom	wexphotographic.com