The lanterns were fairly still, the ones in the middle of the frame vertically are in the center of the focal plane. There are few lanterns in the foreground that are moving where you can see the motion blur, those are also starting to fall out of the focal plane.

I could have gotten zero motion blur even at 30 fps or maybe even 15, only the ones that had just been released were really moving much at all. I have a different shot that was at ISO 800 and much higher shutter speed. If I remember it after work I will post a version of that here for comparison.

I generally go for heavily crushed blacks to get a bit of a chiaroscuro effect with the light. I think though I need to pull up the darks a bit more; someone I work with saw the image over my shoulder and could not quite understand what the rocky wall of the pond was.

Cheers,
@kellyjanderson