About: http://webisa.webdatacommons.org/312818703

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 present invention relates to an apparatus for indicating whether photographing conditions, such as exposure and focus etc. are proper or improper, within a finder of a camera.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com