Description: Features: Neutral density can be adjusted from 1 to 9 stops, easy to create different neutral density by rotating the ring To meet the dimming requirements of different light levels, there is no need to prepare multiple fixed-range ND mirrors. Suitable for dynamic screen, waterfalls, streams, clouds, cars, waves or any fast moving subject Slim profile design. Thin filters are essential for avoiding vignetting when shooting at wider angles. Apply slow shutter speed under strong sunlight exposure. Simply rotate the ring of this filter, it offers 1 to 9 stops added density. Specification: Lens material: AGC optical glass (professional glass material, non-resin) Frame material: Aviation aluminum Frame thickness: 6.6mm (ultra-thin section) Lens compression spring: screw-in Optional caliber: 37/40.5/43/46/49/ 52/55/58/62/67/72/77/82/86/95 Installation method: 1.Threaded between the filter and the lens.Align the filter with the lens connector, screw it clockwise to the front of the lens, and tighten it. 2.Conversely, the counterclockwise screw is loosened and the filter can be screwed out. Package Includes: 1x ND Filter Lens