Meshes
RealFlow | Cinema 4D meshes carry velocity information which can be read by a render engine. Under Mesh > Mesh you will find a parameter ("Motion Blur Strength") to control this effect:
To render out meshes with motion blur you can use Cinema 4D's physical render engine, or any other supported renderer. With Cinema 4D's standard renderer you have to activate sub-frame motion blur:
- Open Cinema 4D's Render > Edit Render Settings...
- Click on Effect... > Sub-Frame Motion Blur
- Adjust the number of sample frames.
Particles
Particles cannot be rendered by default, and they always need an object attached (see → "Particle Rendering"). Currently it is not possible to control motion blur strength in conjunction with particles/render instances.
Rigid and Elastic
Both deformer types do not support motion blur at the moment.
Thinking Particles
RealFlow | Cinema 4D's particles can be turned into → Thinking Particles under Fluid > Particles. These converted particles contain the original velocity information for motion blur effects: