28-layer crystalline coating,, scratch-resistant, waterproof, and oil-resistant coating, enhancing light transmission and colour reproduction Waterproof, oil-resistant, and coating + opticaled glass + light-reducing coating For 360 Go 3S, filter set, all-around protective coating, aviation-grade aluminium alloy frame, clear opticaled glass ND8-ND64, breaks through light limitations, ideal for landscape photography, long exposure, and video dynamic control—the most commonly used filter among landscape photographers Lightweighted aluminium frame / opticaled glass / Multi-layer coating, 360 Go 3S filter set, cinematic-quality shots, effortless photography CPL adjustable filter, CPL adjustable, adjust light intensity by rotating the gear to select the appropriate brightness