original (1:1 size)

5% noise added

20% noise added

Why would you want to ADD noise? Think of it as adding mood, or applying a coat of texture.

Use the Add Noise command to add a film-like grain to the image. When applied carefully, the grain effect can smooth over any messy retouching and give the image a classic film look.

Practical Tips:

the final step - Sometimes adding noise is a good final step for your image. Add just a tiny amount to smooth over any photo editing and give a nice film-look to the image

black and white noise - When adding noise to a black and white image, make sure to add "monochrome" noise instead of colour noise. (execpt of course, if thats what you want ! :)