So, Oculus invented this "low persistence" in order to get rid of motion blur that persisted in DK1 🙂
But I am confused because I've been trying out the DK1 and what I notice is that the motion blur is not apparent if you rotate using your mouse, only when you rotate using your head it becomes apparent.
I experiment by looking forward at a fixed point in the scene, rotate using mouse and rotate using head, and the head rotation delivers the motion blur not the mouse rotation.
So I wonder, is it the input that causes the motion blur? Some sort of sub pixeling artifact?
Motion blur (at least in relation to VR) is actually caused by your brain. Although displays can also cause blurring (for example due to long switching times) this is typically not what people were seeing when they say they saw blur on DK1. This article from Michael Abrash may be helpful to understand why this happens.
When you go from left to right if you have full persistence the head tracking will be correct only for a fraction of the duration of each frame. Low persistence turns off the screen as soon as the frame is incorrect.
