I've seen some killer shots of night scenes, particularly stars, which call for some obcenely long exposures (even catching the rotation of the earth in the stars). I tried getting some of these a couple weeks back but ended up with a lot of noise. Is this just ambient light playing tricks in the atmosphere or do I need to lower my ISO (set at 1600 for my shots) and keep things open longer?
The pics I'm referring to were taken by Walt in the Photo's 11 thread
(Message edited by dirwoody on November 10, 2008)