ZOMEI 49mm ND Fader Neutral Density Adjustable&nbsp;Variable Filter (ND2 to ND400) Ultra Slim Optical Glass for Camera Lenses 1: Brand new With Zomei Variable Density Neutral Gray filters, users can select the intensity from ND2 (1 f-stop) to ND400 (8+ f-stops) by rotating the front ring. 2: Only 7mm thickness, Wide-angle lens compatible ultra thin frame. Double antireflective coating.Glass mounted with high pressure press technology. 3: With The Zomei Variable Range ND Filter, You Can Enjoy Total Control Of Virtually Any Lighting Environment. Simply Turn Its Exterior Ring To Access Any Of ND2-400 Settings Without Wasting Time Changing Or Adding Filters 4: Dunb black superfine grinding frames,The packaging of fashion and generous 5: All Materials Used in this filter Meet the Requirements of European Union's standards of Environ Ment Protection-ROHS(Restrictions on Hazardous Substances).