Motion Blur Issues

[blastframe]

Hello,
I have come across an issue with a camera tracking along with a moving object.

Here's the render of a scene demonstrating the issue:
https://youtu.be/5JHYcXRCDX4

Even though the rate of the cube and the camera are the same, the motion blur of the lights is extending. These lights should be static since they are static within the camera, as in this shot:

Here is my demo scene file:
https://drive.google.com/file/d/1uorYTZ ... sp=sharing

If anyone out there could help it would be very greatly appreciated. Thank you!

** EDIT **
I found this topic on the OTOY forums which suggests use geometry+an emission material, which I tried here:
https://drive.google.com/file/d/1nEea3m ... sp=sharing

The issue persists in the Live Viewer, but seems to be working in the Picture Viewer.

[jayroth2020]

Thank you for the file. The issue occurs with Octanelights. If you create a mesh light instead, it will work as you expect.

See the rendering with the fix here:

Light Motion Blur fix.mp4

(3.04 MiB) Downloaded 1011 times

[blastframe]

Thank you, @jayroth2020!

[aoktar]

Motion blur data is not accurate for every case in LV. Picture viewer mode can provide the better data, so PV is your reference. This is a limitation.