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Accurate motion blur with v attribute and fast moving camera (in Arnold)


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Hi!

I have a very fast moving camera (inside a plane) with some objects moving with it (inside of plane) and some staying still (landscape). My effect is a geometry parented to a rivet object that is constrained on the plane, and that geometry also has velocity attributes on its points (that doesn't take the plane movement into account). I'm rendering with Arnold.

Now my understanding is that, if I turn on all transform motion blur properties (rop, camera and object), plus the v attribute motion blur of the object, I should get something accurate. Instead, I get streak town.

I've tried all combinations of turning on and off the transform motion blur on the camera, object and rop. I've tried adding the plane's velocity to the object's v attribute and turning off its transform blur. Always streaks. The only thing that kind of works is turning off all transform blurs and only keeping the v blur on the object, but that's not accurate, as there's no motion blur due to the relative movement of the camera.

Help?

Edited by GeneralLethal
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