PolarPro Launches Cinema Series Exposure Collection Filters for Phantom 4 Pro and Mavic Air June 15, 2018 By Digital Camera Guru Leave a Comment PolarPro’s new Cinema Series Exposure Collection includes ND128 (7 stop), ND256 (8 stop) and ND1000 (10 stop) machined thread-on filters for Phantom 4 Pro and Mavic Air drones.
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