The Urth 72 mm ND4 (2 Stops) Lens Filter Plus+ is a professional circular neutral density filter that reduces light transmission by a fixed 2 stops, allowing for improved control over exposure settings in various lighting conditions. Photographers and filmmakers can utilize larger apertures in bright environments to achieve shallow depth-of-field effects and longer exposure times for motion blur or long exposures without overexposure. Made from high-quality B270 SCHOTT optical glass sourced from Germany, the filter ensures minimal color casts and outstanding optical clarity. An advanced 20-layer nano-coating provides robust protection against water, oil, and scratches, uniformly enhances light transmission, and makes cleaning easier. The ultra-thin magnalium frame prevents vignetting with wide-angle lenses, and the double-threaded design supports stacking with other filters or attaching screw caps. This filter is ideal for achieving cinematic image quality, controlling depth of field, and precisely capturing dynamic scenes, making it a reliable accessory for demanding imaging applications.