Features: The ND filter can be adjusted among 5 stops(ND8, ND16, ND32, ND64, ND128), by rotating to change the ability of reducing light, for various shooting situations. With three size(58mm / 67mm / 72mm) for option, suitable for different camera lenses. Self locking design, when rotated to Min or Max end, the frame is automatically locked, which facilitates dimming and positioning and avoids the shadow of black X cross. In a strong light environment, to blur the background, thus showing the main body; Get normal exposure combination under strong light conditions. Perfect for shooting of waterfall, lake surface, flowing clouds etc, help you to take amazing photos. Made of premium optical glass, with enhanced green film, waterproof and scratch resistant; Aluminium alloy frame, CNC machining process, no vignetting, ultra-thin ultra clear.