What is noise?
Some cameras “produce” noise more than others. Noise is a “by-product” of the physical process of taking an image with a camera. It’s always there and your goal is to minimize it as good as you can.
Please check the following links to get more in depth-information about this topic:
http://www.photoxels.com/tutorial_noise.html
http://www.cambridgeincolour.com/tutorials/image-noise2.htm
(This article will be revised and more information will be added)
