Hi All, I’m trying to create a Pearl & Dean type of backdrop using a simple rectangular mesh as a particle object emitted from two planes in the distance. The particles move towards the camera with zero gravity. The viewport preview renders fine and behaves as expected when playing the animation. However, the rendered view with motion blur does not. I was expecting the blur to appear as a trail along the direction of motion, what I’m seeing is a blur as if the particles were spinning on their Z-axis. I’ve not set any rotation of the particles (that I’m aware of).
I know about this report (https://developer.blender.org/T40017) but wasn’t sure if it was related.
View without motion blur:
View with motion blur:
What’s also strange is that if I scrub forwards and then backwards on the timeline then occasionally I will see rotated particles.
Blend file tiletest2.blend (3.59 MB)
I’m using Blender 2.73. Any thoughts or work arounds would be appreciated?