Was this video edited in post for color?ND Filters will lower shutter speed while leaving color neutral.
ND/PL Filters will lower shutter speed and also reduce glare and increase color saturation (so they alter the color profile a bit)
Some people prefer to shoot ND only, some enjoy the benefits of the ND/PL. I shoot with our ND8/PL and ND16/PL a lot of the time because I like the increased color saturation and reduced glare.
Here is an example of what the ND/PL's look like:
-Jeff
Sent from my LG-LS997 using MavicPilots mobile app