I'm asking this on behalf of a friend who is trying some camera tracking tests in Maya with Vray.

In short he imported his Syntheyes camera solve and set it up in Maya and all worked fine. But when he switched to the Vray render-er it was all out of sync.

Later he found that if he turned off motion blur the track was okay, but no motion blur, which you'd want.

I realize the forum doesn't deal much into Vray but I figure someone has done a camera track with Vray before and with motion blur.

Any ideas?