PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This will approximately double the distance that the camera can make sense of the pre-flash E-TTL information or help compensate for the reduced output caused by a diffuser over the flash or a bounced flash.Pre-Flash Boost can be engaged for your on-camera flash by simply angling the flash head in any direction other than the standard 90?? position.
http://www.w3.org/ns/prov#wasQuotedFrom
  • pocketwizard.com