1?��The lens adopts optical glass, high?definition grinding treatment, multi?layer nano?coating process, waterproof, oil?proof, anti?fouling and scratch?proof. 2?��Adopt strong magnetic adsorption design, can be firmly adsorbed by lightly approach, perfect fit and coordination, in normal use, it can be shaken, jumped at will without worrying about falling off. 3?��Combining the advantages of ND dimming and CPL polarizer, meeting the two requirements of prolong exposure time and eliminate harmful polarization, good for scenery shooting. 4?��The dimming filter can obtain more to control the aperture and shutter, bringing more exposure ways and space, effectively preventing overexposure, number behind the ND represents the ability to block light. 5?��The polarizer can eliminate non?metallic reflected light, improve the clarity of the image, and increase the color density, rotated to achieve the best effect, fit for OSMO POCKET/