3D Motion Blur?

[Mirko]

Hello,

the max camera motion blur looks right to me (see attached image). The VRay physical cam moblur looks like a fake motion blur. Where do can I activate real 3D motion blur in VRay?
Is this possible at all?

[vlado]

Both are 3d motion blur (2d motion blur would look entirely different and even more "fake"); however for fast rotating objects you need to increase the geometry samples for motion blur. You can do this for the entire scene from the Motion blur settings in the Render Scene dialog, but this is going to take a lot of RAM and render time. Instead, you can increase the geometry samples just for those objects that need it from the V-Ray Object Settings dialog.

Best regards,
Vlado