How to Reduce Noise in Photoshop

How to Reduce Noise in Photoshop The best way to reduce noise in an image is to shoot with a low ISO in camera. The camera creates an exposure based on three values - ISO, Aperture, and Shutter Speed. ISO is the only variable that will result in noise. Ideally, one would adjust the shutter speed and aperture (to let in enough light to create an exposure) at a low ISO to prevent image noise. The best ISO settings to use for lower noise levels are 100, 200, 400 and 800. Anything above that is likely to cre