【Enhanced Image Quality】 Circular polarizing filter eliminates reflections and increases color saturation for stunning photographs. 【Versatile Application】 Ideal for deepening sky blue, enhancing cloud contrast, and reducing reflections on non-metallic surfaces like glass or water. 【Premium Construction】 Crafted from high-quality optical glass with a matte black magnesium-aluminum alloy frame to prevent unwanted reflections. 【Atmospheric Haze Reduction】 Minimizes atmospheric haze in landscape photography without altering overall color balance. 【Professional-Grade Accessory】 Essential tool for photographers seeking to improve image quality and creative control in various shooting conditions. Specifications: Filter Type: Circular Polarizing (CPL) Lens Diameter: 58mm Lens Material: Optical glass Frame Material: Magnesium-aluminum alloy Surface Treatment: Matte black finish Note: Do not screw the filter too tightly. Over time, due to changes in the surrounding environment, temperature, and humidity, the optical filter may become more tightly attached to the lens. If screwed on too tightly, it may become difficult to remove. When removing the optical filter, avoid touching the lens surface with your hands or hard objects. Instead, grip the filter’s frame and rotate it to unscrew. If the filter is too tight to unscrew, you can use a clean rubber pad, press it gently against the filter’s edge, and rotate it as a whole. This should help loosen the filter. After removal, do not leave the filter unattended. Store it promptly in a filter case or a dry box to prevent damage.