Variable 1.8 to 2.7 Neutral DensityReduces Exposure by 6 to 9 StopsDarkens Entire ImageGreater Control over Exposure SettingsReduce Shutter Speeds, Widen AperturesQuartz Glass Construction, Multi-CoatedWater, Oil, and Scratch ResistantHaptic Feedback Filter Ring MechanismExposure Range-Control Filter RingDefender 360 Case, Cleaning Cloth