ND Filter

[mdaddyrabbit]

I have a couple of Neutral Density filters, what i was wondering is if they are used for anything besides motion such as water flow? Excuse me for so uneducated but I am trying to learn as much as possible.

[gasrocks]

Port. work outdoors in a lot of light - where you want to use f/2.8 (for example) but still keep ISO low.