----------------- > Only in plain vanilla TTL mode. P-TTL is a recent addition in > Pentax repertoire, meaning the actual flash is preceded by a > shorter, lower intensity pre-flash, intended to allow the camera to > measure reflectivity of different parts of the scene in order to > compute more efficiently the effective flash burst duration.
Which assumes that matrix metering is being used or different parts of the scene could not be measued in the brief flash duration. len --- - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
