Digital noise is the curse of digital cameras and if you take pictures in low light situations you are bound to encounter digital noise. There’s nothing worse than large red, green, and blue dots appearing all over your photos. PC World has published a great article on techniques to reduce noise in digital photos.
Digital noise increases as you raise the ISO of your digital camera.
Many digital cameras–especially models that support very high ISO levels–have a menu setting that reduces noise when the ISO is set at 800 or higher. It’s a good idea to turn this on.
[Eliminating Noise From Digital Photos]
