Rollei 55 mm CPL Lens Filter - 16 Layers Multi-Resistant Nano Coating, Polarizer, Glass Filter, Water/Oil/Stain Repellent Intensifies Colour Saturation and contrast Made of Japanese optical glass for highest picture quality, 16 layers coating Water, oil and stain repellent, scratch resistant Up to a focal length of 400 mm Available in diameters 49, 52, 55, 58, 62, 67, 72, 77 and 82 mm