K&F Concept 37mm Variable ND Filters ND2 32 Adjustable Fader Neutral Density ND32 Filter, NO Spot X Black Issue, MRC 28 Layer, Ultra Slim, Waterproof (Nano Series)

Material: ND Filter: Made by Completed Professional Optical Glasses instead of Optical Resin. filter reduces the intake of light without affecting the overall color balance. NANOTEC: Our optical engineers developed new Nano coating layer technology， Waterproof, scratch-resistant, anti-reflective green coating, effectively prevent from oil, fingerprint, scratch, protect valued lens. No "X" cross on images: Say goodbye to the "X" cross on images, K&F utilize cutting edge technology you're going to say goodbye to this common issue with wide angle lenses and variable ND filters. Professional Design: Ultra slim rim design preventing wide angle vignetting. Extra tough aviation aluminum frame ensuring durability and jamming prevention. NOTE: Please verify your camera's lens thread size first(usually marked somewhere on the lens barrel or the lens cap).This number is always preceded by a "Ø" symbol. i.e. Ø37 = 37mm lens thread size.