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? -- 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.

