2009/7/31 John Sessoms <[email protected]>: > From: "P. J. Alling" >> >> The camera automatically does a dark frame hot pixel noise reduction on >> long time duration images. The dark frame is produced right after the long >> exposure for the same amount of time to approximate the hot pixels that will >> light up from the heat build up from the sensor being continuously powered >> up. So what happens is the exposure takes roughly twice as long. 1/2 of >> which is after the actual exposure is finished... > > The K10D didn't do that. Did the K20D? Could it be turned off if it did?
John, I have a K10D and it does do dark frame subtraction on long exposures. Or you can turn it off, like I did on the 4th of July to photograph the fireworks. Did you mean something else and I didn't understand you correctly? Please elaborate! :-) --M. -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- http://www.EnticingTheLight.com -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
