K&F CONCEPT 39mm Variable ND Filter ND2-ND32 1-5 Stops HD Optical Glass No Black Cross Waterproof Multi-Coated Adjustable Neutral Density Precise Light Reduction Smooth Rotation Nano-X Series FN712

HD Optical Glass Material: Variable ND Filter: It's made of professional Optical Glass instead of optical resin, which can effectively reduce the surface reflection of the filter, and greatly reduce the occurrence of glare. Rotating the filter to change light intake without affecting the overall color balance No "X" cross on images: Say goodbye to the black "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 Double-sided NANOTEC Coating: New Nano coating technology, it balances the light penetrating trajectory well to ensure that the sharpness of the image is not compromised. It also makes the vnd filter waterproof, scratch-resistant, anti-reflective, effectively prevents oil stains, fingerprints, scratches, and protects precious lenses Slim Frame: Ultra slim rim design preventing wide-angle vignetting. Extra tough aviation aluminum frame ensuring durability and anti-clogging Choose the right size: This filter is compatible with all 40.5mm lenses. 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. Ø40.5 = 40.5mm lens thread size