JYC High End Premium CPL-Filter (Circular Polarizing Filter) for Professionals Pro1-D_CPL 52mm Very high quality, professional CPL Filter Pro1 D CPL. Suitable for all lenses from Nikon, Canon, Sony, Pentax, Olympus, Sigma, Tamron, Zeiss etc. Glass Thinness: 2.5mm, Ultra Thin Frame: 3.0mm Material: Optical glasss and Anodized Aluminum Metal Digital Multi-Coated, Black Almite Frame, Low Profile Frame, Knurling Edge Frame, UV Protected Case