Variable Neutral Density Filter Offering Greater Control Over Exposure Settings, Allows Reduce Shutter Speeds and Wider Apertures True Color result that avoids color shift seen in other Variable filters Variable 0.3 to 1.5 Neutral Density Reduces Exposure by 1 to 5 Stops Exposure Range-Control Filter Ring with Hard Stops at Each End No 'X' Effect High Definition optical glass Nano Coating, Waterproof and Anti-Reflective Coating An optional rotating lever that can be removed Larger front thread to avoid vignetting on wider lenses