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fog 3d – general how to…
I have my comp, 580 700something x 400something pictures. I used 3d assistants lite “cubic distribution” to scatter the images within a 30,000 x 30,000 x 30,000 pix cube so I can fly my camera around the photos(yeah, it brings my system to a crawl but…).
How do I use the fog 3d effect in this situation supposing I have done nothing else to this comp? I have tried adding a null object, applying the effect to it and then altering the settings etc, I have used a greyscale tiff as the scattering medium(gradient layer?) But non of my tinkering is working.(which is the way I usually prefer to figure things out but I’m in a crunch now)
Any pointers would be welcome and appreciated… -
4 Replies
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Fog 3D is designed to be applied to an RLA or RPF image from a non-AE 3D application. Those image file formats contain embedded z-depth data that the effect uses to create fog.
Regrettably, the effect does not work on AE’s layers in 3D space.
To do that, you’d have to apply the brightness and contrast effect to all the layers, and, using an expression, tie that effect to the layer’s z-distance from camera. It’s beyond me at this moment, but it you search the COW archives for one of Dan Ebbert’s posts using “camera” and “distance” (maybe “fog”) you might find something… though you might only find a script linking opacity to z-distance.
Hope that helps,
Steve -
well, at least it lets me know I need to stop fiddling with it or get 3dsmax or maya.
Thanks -
This question comes up so often — I’d love to have a tutorial in the library showing how it works.
Any volunteers? Write me if you’re interested.
Kathlyn Lindeboom
The Mistress of Mmmooooo! -
If you have combustion, there is a work-aorund. You can draw paint solids with varying shades of greay, hide them and plug them into say blur and luma (for fog) and tehn use the g-buffer to build RPF data that is not actually there (or something there in).
Cheers
-D-
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