Eliminate unwanted reflections and glare with the B+W 49 mm Kaesemann High Transmission Circular Polarizer MRC-Nano Filter. It features a filter factor that ranges from 2 to 2.8x and reduces the exposure by about 1 to 1.5 stops. This filter is capable of reducing haze in landscapes for those breathtaking pictures. It also helps in providing a greater tonal and color saturation. Additional features in this filter include an MRC multi-resistant nano coating, a thin brass filter ring, and 49 mm front filter threads.