Creating 3-D dust particles in After Effects is achieved through its particle generator. The particle generator has many options, such as type, birth size, longevity, gravity, colour and size variation. The birth rate is the creation of the particle, and the death rate is the end or fading out of the particles. Particles include a wide variety of options such as stars and bubbles along with the ability to add your own artwork.
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Choose "Composition" from the main menu, and click "New Composition." In the pop-up panel, enter "30:00" to create a 30-second duration. Click "OK" to close the panel box.
Make a solid background by clicking on "Layer," "New" then "Solid." Choose a colour for the background that represents dust colour, such as brown, black or yellow.
Click "Window" and "Effects and Preset" from the pull-out menu. Type "Particle" in the search box, and double-click on the "CC Particle Systems II" option.
Set the birth rate to .01 and the longevity to .07.
Click on the arrow next to the "Physics" option, and change the gravity to 0. Set velocity to 2.3 to create the distance of the dust particles.
Under the arrow "Particle," set the type to concave, birth size to .02 and death size to .12.
Adjust the settings as needed.
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