----- Original Message ----- From: "George Sinos" Subject: Re: K20D Hot Pixels
> I agree with Bills comment on problem with mobile hot pixels, but I > always thought that was common in long exposures. If not, why would > you need to do a dark exposure subtraction after every long exposure. > If the noise patter was always the same, couldn't you just run a > standard NR routine? Hot pixels are a fact of life, but they shouldn't be moving from one location on the sensor to another one. What DPReview found was that the hot pixels moved around the sensor from one capture to the next, and they think this is a fairly big deal, as do others who I correspond with from time to time. For example, it kinda makes the pixel mapping feature that they put into the K20 well nigh useless. What's the good of mapping hot pixels today if tomorrow they aren't dead, but another set is? Having said that, the threshhold for hot pixels is low enough in my observations that as long as it doesn't get worse as the camera ages, it probably won't be much of a problem in real life. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
