3D Compositing with Action > Action: Camera > Applying Motion Blur >
Creating Custom Motion Blurs

The motion blur curve controls the sample weight over the scope of the motion blur. The point on the left is the weight of the first sample and the point on the right is the weight of the last sample. By changing the curve, you can create custom motion blur effects such as a Gaussian blur.

As with the Channel Editor, you can add keyframes to the motion blur curve using Add mode, move keyframes with Move mode, and modify the curve's shape using tangent handles.

The original animation with Motion Blur disabled. |
Motion Blur is enabled using a custom motion blur curve and phase set to 100. |
Motion Blur is enabled using the same motion blur curve as above. Phase is set to -100. |

TipYou can preview your motion blur effect in Batch or Action by clicking Preview. This will display the rendered frame at the current frame in the timebar. Should you want to see the whole sequence, attach a node to the Batch output and show the node's front clip while jogging the timebar positioner.