About: http://webisa.webdatacommons.org/356924056

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	Pentax basically updated this design and added rounded aperture blades, so that out of focus areas tend to be smoother with more rounded bokeh.All in all, this lens is a joy to use.
http://www.w3.org/ns/prov#wasQuotedFrom	amazon.com