K&F CONCEPT NANO-X Variable ND Filter ND8-ND128 (3-7 Stop) HD Hydrophobic VND Filter for Camera Lens

K F Concept. Imported AGC Glass Variable nd filter made by importing AGC glass, first-class filter material balancing the color batter, with no color cast and no effect for the image clarity and sharpness. Self-Lock Frame, No X cross Say goodbye to the X cross on images, K&F Concept utilizes cutting-edge technology to perfectly avoid the common X issue of variable nd filter on wide-angle and telephoto lenses. NANOTEC K&F CONCEPT optical engineers developed multi-layer nanometer coatings total of 40), waterproof, scratch-resistant, and anti-glaring, protecting the valued lens and presenting high-quality photos. Ultra Slim Frame Avoid Vignetting 7.4mm Ultra-slim frame design utmost avoid the wide-angle vignetting support 40mm focal length no vignetting). CNC-non-slip design helps install and remove the filter easily