>>3437784>ND filter and a shutter speed of around 1 secondToo fast, if you want go long exposure way you start at 30s
>>3437809>Slow enough to blur their heads and bodies but fast enough that the more stationary body parts such as the feet are still distinguishable.Yes, I think you got it right; shutter speed should be around 1/15s-1/30s; this is easy to pull off on film bc of cumulative exposure;
When you do it on digital it looks interesting but rather different:
> https://www.flickr.com/photos/cfriel/15182889948/Pic related
