Be at the forefront of photography technology with the 77mm Nano-x ND8-128 3-7 Stop Magnetic Variable Neutral Density Lens Filter. This innovative filter employs magnetic technology for a swift and seamless 1-second installation, a significant improvement over traditional thread filters that typically take up to 6 seconds to install. Simply attach the filter adapter ring to your lens, and the magnetic filter will be securely adsorbed in an instant.This ND8-ND128 variable filter stands out with its unique frame self-lock technology, designed to eliminate the common "X" cross issue often encountered with wide-angle and telephoto lenses. This cutting-edge feature ensures your images remain clear and distortion-free, enhancing your photography experience.The 77mm Nano-x ND8-128 filter boasts 28 multi-layer nanometer coatings on both sides of the glass. These layers not only provide superior waterproof and scratch-resistant properties but also offer anti-glare benefits.