Nikon says the Z9 will support 15 shutter angles between 5.6° (which would result in almost no motion blur) and 360° (which would create the maximum amount of motion blur).

The 'Zoom ring angle setting' refers to what's better known as the 'shutter angle' – the proportion of time the shutter is open for each frame of video, all is explained in our handy cheat sheet ...

They have faster shutter speeds: The fastest mechanical shutter speed is 1/8,000 sec. By comparison, many electronic shutters go to 1/32,000 sec and beyond.