52mm ND2-400 Lens Filter for GoPro Hero11 HERO10 HERO9 Features 1. For GoPro Hero11 Black HERO10 Black HERO9 Black 2. The function of the ND filter is mainly to reduce the amount of light entering the camera and bring more exposure options; 3. Installation and disassembly, quick and convenient 4. The ND filter and UV filter also protect the camera lens, which has a certain dust-proof effect 5. All ring 52mm camera lens filters, can be installed on the action camera adapter Note: When the adjustable ND filter is at the junction of the two limit values, a cross shadow may appear when shooting. Specifications 1. The adapter ring is aluminum alloy, CNC machining; 2. Interface size: 52mm 3. ND frame material: aluminum, anodized, laser engraved 4. ND lens material: optical glass, polarizing film 5. Adjustable range of ND mirror: ND2-ND400 6. The function of ND light reduction filter: the main function is to reduce the amount of light entering the camera and prolong the exposure time. It is mainly used for slow shutter landscape photography and large aperture portrait photography under bright light! Package List 1. Adapter ring x 1 2. ND filter x 1 3. UV filter x 1 4. Lens cap x 1 5. Hex wrench x 1