> I've heard here and there that such long exposures are not > reccommended due to risk of damage to the sensor.. Is this true ? > i've tried a few searches on the subject but could not find any > conclusive information. > In my experience trying to do some astro-photography, a DSLR doesn't work very well for really long (more than a couple of minutes). The thermal noise of the sensor really starts becoming a problem. I do know that for astro stuff, lots of short-term exposures are often stacked together to reduce the noise.
As far as damage to the sensor, I've heard that's mostly a myth and has to do with having enough light to bleach the dyes on the color Bayer filter on the front end. -Cory -- ************************************************************************* * Cory Papenfuss, Ph.D., PPSEL-IA * * Electrical Engineering * * Virginia Polytechnic Institute and State University * ************************************************************************* -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net