ND filter can reduce the exposure amount of camera, extend the exposure time, and help water or clouds in the photo create a soft, cottonlike texture. Provide highdefinition sharpness, highdefinition imaging, to meet the needs of professional photographers. Super light aluminium filter frame, will not bring burden to your lens, provide better use feeling. Nondestructive quick disassembly and assembly, effectively save your time, more convenient to use. Multilayer nanometer coating technology, with waterproof, oilproof, , scratchproof features.