Fast moving object issues

[georgi.zhekov]

Seems to be working fine in here..can you send the scene over so we can check it out?

If you don't need this in the alpha pass - you could add a V-Ray atmosphere render element and it should give you a pass with the smoke, where the geometry will be all black.

[BenOC]

Here is a cut down scene but it is doing the same thing. This is when activating the alpha (-1.0) so the object can be comped in later but still have smoke surrounding it.

You can see in the render that it is trying to do it at the bottom of the sphere but it is not representative of the preview?

[BenOC]

and file

[georgi.zhekov]

Ah, in your case seems that you were misled by the GPU preview. If you go in the Preview rollout of the simulator and turn off the GPU preview, you will notice that the sphere is actually in front of the smoke.
Unfortunately the GPU preview has some limitations for occlusion of objects. You can find more it here - https://forums.chaosgroup.com/forum/...view-occlusion

[BenOC]

Hey thanks for that info Georgi that is something for me to be mindful of in future, appreciate your help.