Thank you both for the great info! sfdex, I've used that ReelSmart product in AE before, and it does work great! However, there's still some problems when it comes to having a scene where more than one moving object passes in front of each other. Real 3D motion blur handles this fabulously, but post motion blur, even very high quality like ReelSmart, still gets distorted or warped under such conditions. For instance, try rendering a scene with two balls rolling in opposite directions across the screen, one set slightly farther in the distance, but parallel to the other. Post motion blur will fudge up at the point where the ball in the foreground passes in front of the ball in the background. This is where true 3D motion blur comes in handy.