Effect: Dirt, Black

Description
Simulates the presence of small dirt particles on the film positive. These dirt particles appear black on the screen.

Controls

Probability:		The probability that any give frame has dirt particles on it.
Number:		The maximum number of dirt particles that will appear on any given frame.
Opacity:		The average opacity of the dirt particles.
Effect In/Out:		Animates the Number.

Notes
Black dirt represents dirt which is present on the film positive being run through the projector. This type of dirt is quite common. White dirt represents dirt which was present on the negative in the camera, which is less common.

See Also
Dust, Black | Dust, White | Dirt, White

Examples

Original image.	With black dirt.	Detail closeup.