Just like in the picture, the motion blur effect appears even though the models in the first and second frames have not started rotating yet. Is there anything I haven’t set correctly? I have uploaded the project file:face_with_spiral_eyes:
333333.c4d (266 KB)
Thakn you for sharing @123456_1 I will look into it and come back to you once I have more information.
@123456_1 I tested this on your scene, new simple scene in Cinema and a new simple scene in Maya, as well. It calculates motion over a time interval around each frame, and with a very low shutter speed ( yours is 10) that interval becomes large enough to sample the motion starting at the frames with animation even when the rendering frame is not animated.
Hi @123456_1 , the effect you observe is caused by the Shutter Speed value (for the Physical Camera) you are currently using in your scene:
To extend the answer with more details - currently in your scene document settings you are using 30 FPS as document time frames per second. Since your value for Shutter Speed is 10, this means that physically the camera’s shutter is open for 0.1 s. In the same time, given the 30 FPS setting, it means that the single frame takes approximately 0.033s (or 1/30 s). Which means that the camera samples approximately 3 frames of scene motion for each of its rendered frames, which in your example - when you render Frame 1, it means that the motion in the range of 1F to 4****F is sampled (and the rectangle starts rotating at 3F). Similar for your render from the second frame.
If you want more precise control over the motion blur, you should try using the Movie camera type, which provides control over the motion blur interval offset, or you can try using the Render Settings overrides with regular camera.
I hope this answers your question and helps you achieve your desired effect.
Thank you for your detailed answer:)
Thank you for your reply:)