create fog over a real footage

[Walter Biscardi]

Particles are definitely the way to go. There are several varieties of fog already in the Motion particles and sometimes the Clouds work well too. You just have to tweak and adjust the particle parameters to your heart’s content to get exactly what you’re looking for.

And just one layer of Fog won’t create something believable, you’ll need to create multiple layers with varying behaviors to give it more depth and believability.

Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.

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[David Bogie]

And real fog appears behind some things. Real fog creates volumetric and corona lighting effects. Real fog may or may not appear whispy, it might be a solid unmoving obscuration.

Simulation of natural phenomenon is difficult. Fake Fog almost always looks like a cheeseball effect, use sparingly.

bogiesan

This is my standard sigfile so do not take it personally: “For crying out loud, read the freakin’ manual.”

[Noah Kadner]

Also I’d look into the wondertouch particle emitters for Motion. They in particular have a lot of useful and natural looking effects:

https://www.wondertouch.com/

-Noah

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