PolarPro's Cinema Series Artisan Filters (pack of 3) are high power ND filters that enable photographers to capture long exposure shots during daylight hours.
Natively there is too much light for the Phantom 4 Pro/Advanced drone to shoot long exposure during the day.
A heavy ND filter such as an ND64, ND128, or ND256 will help cut down light unlocking longer exposures during the day.