The B+W 82mm XS-Pro HTCM XSP KSM Circular Polarizer Nano Filter is a top-of-the-line polarizing filter designed for professional photographers. With its high transmission and multi-resistant coating, this filter reduces reflections on non-metallic surfaces and enhances color saturation. The XS-Pro mounting ring ensures that the filter sits closer to the lens, reducing the likelihood of vignetting. The KSM nano coating repels water, dirt, and scratches, ensuring durability and easy maintenance. This filter is a must-have for photographers looking to improve the clarity and quality of their images. Trust the B+W brand for premium quality in polarizing filters.