3-Stop Neutral Density Filter (ND8) (4.24g): The ND8 filter is what we use on partly cloudy to mildly sunny days where we need to knock the shutter down by 3 f-stops to achieve a shutter speed of 1/60th.
4-Stop Neutral Density Filter (ND16) (4.24g): The ND16 filter is what we use on very bright days to reduce shutter speed by 4 f-stops. We generally use the ND16 filter while filming in the desert or over snow.
5-Stop Neutral Density Filter (ND32) (4.24g): On extremely bright days, the ND32 reduces the camera's shutter speed by 5 f-stops. getting shutter speed near 1/60th - 1/50th, allowing you to capture cinematic quality content even in the brightest conditions.
The following guideline is a good starting point for when to use each filter while filming with your Phantom 4, Inspire 1, or Solo. The goal of this chart is to reduce the camera’s shutter speed to 1/60th to give aerial videos a smooth cinematic look, rather than a choppy high shutter speed look. A popular way of filming aerial video is to have your shutter speed at double your frame rate. So, if you are shooting 1080/60, then you want to try to achieve a 1/120th shutter speed. If filming 4K/30 or 24, you will want to be near 1/60th shutter speed.