Woody. I did used a 3 stop ND and a polarizer to slow the shutter speed. In a couple of photos I used two 3 stop ND filters but I not in this one. Since moving to the hassey system, I find myself not wanting to use a polarizer as often for the skies. I think it is more helpful for slowing the shutter and/or reducing the reflection off water. In fact, I am using the graduated ND less often as well or at least starting to realize i do not need as often.