Yes, that is the suggested standard for video. You want your SS (denominator) to be approximately twice the FPS that you have set. If you have 30 FPS set, you will want a SS of approximately 1/60th of a second. With the P4, the best way to accomplish this - while not loosing natural color - is with an ND filter. They do come at the expense of darkening up the scene however, so I'm also suggesting that you choose the lowest numeric level filter that will still allow for these settings depending on the brightness of the day. Maybe on a moderate sun day, give an ND 8 a try. In my opinion, if you are willing to use ND filters, you should have ND 4, 8, and 16 filters. For very bright conditions like over water or snow on a cloudless day, an ND 32 may be necessary as well, but I find that I don't use my ND 32 at all. Mostly I use my ND 8 and 16.