Hi Guys,
I tried to render differents motion blur on my scene ( particles, Smoke sim, Geometry) but not effect visible at all..
I setup in the camera, I tried to add trail node for the geo..
I tried to find some identical issues on the forum or internet, with or without motion blur the render has the same look…
Here some printscreen.. If your have any ideas to solve it.. THANKS!
Hello,
Please make sure that “Use Velocity Blur” is enabled under the Render tab → Sampling of the Geometry node.
A couple of notes:
1. The Physical Camera controls override the Render Settings options for motion blur. If you’re using a Physical Camera, you can reduce* the shutter speed a lot to make sure motion blur is working; you can then tweak the exposure/ISO value if needed.
2. Caching to Alembic and VDB would greatly speed up your time to first pixel - I promise that the warning is not just for show 
Best regards!
Hello,
On the File Cache SOP, you can try setting the “Load” type to “Packed Disk Primitive” instead of “All Geometry”, and the “Display” (in the same tab) to “Full Geometry” if that’s more convenient.
You can also try increasing the “Multiplier” on the Volume Grid Shader → Rendering → Motion Blur tab - maybe the velocity is too low for the motion blur effect to show in your smoke?
Best regards!
ok! Thank you!