The Camera Bubble in Fog Volume - Material Settings?

[ROUBAL]

@Gordonrobb : the drawback of this method is for animation as said earlier in the first post of this thread : if the sphere follows the camera, the fog moves with them.

This being said, it is a problem imho only if the fog is mixed with a cloud/turbulence texture or if the render is very grainy. Otherwize if the distribution of the fog is even, imho it should not be noticeable.

[gordonrobb]

Would be interesting if to see of the turbulence stays in the same place if you set the mode to World rather than Local.

[TBFX]

If you have a sphere with inverted normals or a plane facing the camera as your fog geo, and it moves with the camera, the fog volume is NOT moving. Only the "window" that you are looking at the fog through is. Think of it as a volume and not as geometry, the geo just tells the renderer where to render the volume, even if you have a cube volume with the camera on the outside and you move the cube, the fog is not moving with the cube only the area in space where you are rendering the fog has moved. If you textured the fog with noise (something I thought had been disabled in Octane since fake shadows were introduced) then so long as this texture is left static the fog won't move.

T.