I'd like to do an animation with a bunch of balls and I would really love to add a trail effect to them, so that they leave a trail behind them while moving. The balls are simple objects with an emission shader on them. When I play the animation before I render, blender lags a little bit and doing so it creates the exact effect that I want. But when I render, the effect is gone. Does anyone know how to help me?
Animation before rendering:
Animation after rendering:
