37mm Adjustable ND Filter ND2 400 Variable Neutral Density Lens Filter with Clamp for Smartphone Mount Reduces Light gray

37mm Adjustable ND Filter ND2 400 Variable Neutral Density Lens Filter with Clamp for Smartphone Mount Reduces Light gray.Feature: 1. [ND2 ND400 Adjustable] The 37mm adjustable ND filter offers 1 to 9 stops of variable light reduction, allowing you to fine tune exposure based on lighting conditions for innovative photography in diverse environments. 2. [Clamp On Phone Design] Featuring a sturdy 37mm phone clamp, this ND camera filter securely attaches to most smartphones and supports additional