Hello! So there are tons of threads about ND filters, where to buy and if people like them. I just received a set of filters (ND2, ND4, ND8 and ND16) which can of course be combined into lots of combinations. No where have I seen a recommendation on a sunny day as to what I should use? I know if shooting 30 fps I would want ideally a manual setting of 60 shutter speed. To bring the shutter speed down without it all washing out I need ND filters. But other than trial and error by flying up, finding ND not high enough, landing, swapping filters, trying again, etc, do people have a recommendation? Is ND 16 adequate for sunny days? ND 32? What do people find best (with the understanding that local conditions will vary requiring some adjustment)? I can do the trial and error thing but was hoping for some starting advice. Thanks!