Add noise

To do this…	Use this operator
Noise	Noise COP Can create different types of noise, including completely random pixels, and more continuous noise like Perline, Sparse, and Alligator. Useful for adding variation to mattes, either by multiplying the matte, or adding to/screening the matte.
Film grain	Grain COP

To do this…

Use this operator

Noise

Can create different types of noise, including completely random pixels, and more continuous noise like Perline, Sparse, and Alligator.
Useful for adding variation to mattes, either by multiplying the matte, or adding to/screening the matte.

Film grain

Compositing