The 3-Filter Neutral Density Kit was put together by Tiffen for the DJI Mavic 2 Pro to offer multiple aperture and shutter speed options for Mavic 2 Pro operators. The kit comes with 0.6, 0.9, and 1.2 neutral density filters that reduce light from passing through by 2, 3, and 4 stops, respectively. Each filter creates a darkening of the entire image, allowing you to photograph with a wider aperture to control depth of field or a slower shutter speed to convey movement more easily. The filters are made from optical glass with waterproof and scratch-proof multi-coating, which reduces reflection and maintains clarity and color fidelity. The filter rings are made from aluminum, they have a rectangular shape, and the kit includes a metal case to protect and carry them.