Effect: Dust, Black

Description
Simulates the presence of microscopic dust particles on the film positive. These dust particles appear black on the screen.

Controls

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

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

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

Examples

Original image.	With black dust.	Detail closeup.