Sirui 58mm Nano MC Circular Polarizer Filter, Brass Ring

Reduce light contrast on images, eliminate or weaken reflections in images.• Eliminate the reflected light and extra UV protection for exceptionally clear images. Perfect for creating more vibrant blue skies and white clouds• High quality polarizing film with nearly 100% polarization, excellent neutral color transmission for accurate color reproduction for creating film and video productionMaterialGerman Schott Optical Glass B270 with Premium Quality Brass RingCoating for CPL with Brass RingL41 and AF coating on both sides.