This sub-menu contains effects that add or remove digital "noise".
is included in this sub-menu as it can be used to reduce noise at low settings. At higher settings acts like a blur.
The following original image will be used to demonstrate the effects:
This adds random noise to the active layer or selection.
The effect must be run over areas containing color to produce noise. Running the effect over transparent areas produces no noise in that region.
This effect is used to reduce digital noise in photographs. This noise generally occurs when digital cameras cannot correctly capture fine details or are produced by the electronics in the camera itself.
In the example image there is little ambient noise. The difference can be seen in the woodwork detail which looks cleaner after the effect has been run.