Feature: 1. Multiple Functions: This filter combines the advantages of ND filter and PL polarizer to prevent overexposure, block scattered light, reduce shutter speed, extend exposure time, eliminate reflections, and increase saturation. 2. High Transmittance: The lens adopts optical glass, high definition grinding treatment, high transmittance. 3. Nano Technology: Cameras lens filter adopts double sided multi layer nano coating technology, and the lens is waterproof, oil proof, stain proof and scratch proof. 4. Advanced Technology: Cameras lens filter adopts coating light reduction process, almost no color cast,and includes 4 specifications, ND8 PL, ND16 PL, ND32, PL, ND64 PL. 5. Small Portable: NDPL filter is compact and easy to carry, with a storage box, which can be placed in a pocket and carried in a backpack. Specification: Item Type: NDPL Filter Material: Aluminum Alloy, Optical Glass Applicable Models:For Mini 3 Pro. Package List: 1 x ND8 PL Filter1 x ND16 PL Filter1 x ND32 PL Filter1 x ND64 PL Filter1 x Storage Box