How To Avoid Digital Noise and Grain in Your Photography
by Steve Anchell
What is Noise?
Noise is a broad term used to describe undesirable visual artifacts in an image, often accompanied by an overall degradation of sharpness. Noise is not unique to digital photography, but a side effect that occurs with all electronic devices: the background hiss of a radio or the distorted sound of an over-amplified guitar. ... read more on SLR Lounge.