On Wed, November 19, 2008 08:35, Edwin Blenkinsopp wrote: > The problem is, of course, digital noise. Aside from noise reduction > software is there a digital technique, perhaps used with the better > cameras, that allows noiseless, minutes long, digital exposures? Amateur astronomers working digitally seem to like layering multiple shorter exposures to produce a final result. Noise, being, random, will tend somewhat to cancel out, plus they're running the sensors at a lower duty cycle so they shouldn't heat up as much. I haven't tried this technique myself, I'm not sure what you could do with it for pictorial photography. -- David Dyer-Bennet, dd-b@xxxxxxxx; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info
