Polaroid Optics 77mm Multi-Coated Neutral Density Fader Filter &ndash; Variable Range ND2-ND2000&ndash; Holds Optical Quality &ndash; Compatible w/ All 37mm DSLR Cameras 6-in-1 SMOOTH FADING ACTION  Enjoy Control Of Depth Field with Six Ranges All in One Filter; Twist Ring for ND3, ND6, ND9, ND16, ND32 or ND400; Perfect for Outdoor Photography & Complex Light Conditions PRO-GRADE NEUTRAL DENSITY FILTER  Provides Ultimate Control Over Light Exposure, Shutter Speed & Color Integrity While Allowing for Wider Aperture Settings; No vignette PREVENTS OVEREXPOSURE OUTDOORS  Limits Light Passage Through the Lens in Bright Conditions to Ensure Optimal Focus & Depth-of-Field Control for Wide Landscapes; Will Not Affect Color or Optical Quality MULTI-COATED PROTECTION  Durable, High Quality Filter is Manufactured to Withstand Everyday Exposure to the Elements; 16-Layer Weather-Sealed Surface Blocks Moisture & Dirt From Infiltrating Lens Element COMPATIBLE WITH ALL 77MM LENSES  To Ensure Perfect Fit, True Color, Optimal Saturation & Zero Detail Loss, Verify Lens Thread Size Based on 77 Marking on Lens Barrel or Underneath Lens Cap