K&F Concept 77mm Variable ND Filter ND32-512 (5-9 Stops),5 Stop Adjustable Neutral Density for Camera Lenses with 28 Multi-Layer Coatings Waterproof

【Material】Neutral Density: Made by Completed Professional Optical Glasses instead of Optical Resin. filter reduces the intake of light without affecting the overall color balance. 【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. 【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. 【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(usually marked somewhere on the lens barrel or printed underneath the lens cap) before ordering. The number is always preceded by a "ø" (diameter) symbol. 5- 9 Stops adjustable.(ND32,ND64,ND128,ND256,ND512).