View Full Version : digital fog
stillvague
01-22-2007, 03:41 PM
Anyone know the secret?
monte
01-22-2007, 06:09 PM
You need Z-Depth for the background it'll be affecting - this is "easy" if the terrain/surroundings of the character are modelled in 3d (ie Maya) and fog is applied to that, and matched to the greenscreened talent.
A good example of this is the silent hill movie
It is a shit ton of work
The ghetto and gross looking method is to apply a layer over your footage with either an animated or still fog layer with different transparency settings - which looks disgustingly fake and only helps to throw your contrast out the window...
oneinfiniteloop
01-23-2007, 10:55 AM
The ghetto and gross looking method is to apply a layer over your footage with either an animated or still fog layer with different transparency settings - which looks disgustingly fake and only helps to throw your contrast out the window...
I wouldn't call this the ghetto/gross method, plus I know of movies that have used 2d layers in 3d space with displacement maps to create realistic looking fog. You just have to think through it and think about what's physically happenign and recreate that in AE.
I've seen smoke, fire, and otehr similar effects done this very same way and most couldn't tell the diff.
stillvague
01-23-2007, 05:58 PM
thanks guys for the help ill try to figure this out. need to figure out a way to get a fog layer now. ill try it the cheezy way but not take it too far
monte
01-24-2007, 06:47 PM
I wouldn't call this the ghetto/gross method, plus I know of movies that have used 2d layers in 3d space with displacement maps to create realistic looking fog. You just have to think through it and think about what's physically happenign and recreate that in AE.
I've seen smoke, fire, and otehr similar effects done this very same way and most couldn't tell the diff.
For some *small* effects this can work but I'm assuming he's talking about fog
ie: http://www.cs.cmu.edu/~zhuxj/astro/images/meteors/leonids/2001/stillfog.JPG
and when you try to create that effect using only an overlay, it looks trash - because it simply won't fit the effect