B+W 77 mm KSM MRC Slim (XS Pro) Circular Polarizing filter and case

Very high-quality, German-made optical glass Käsemann (KSM) filter designed to reduce reflections from non-metallic surfaces, increase color saturation, and darken skies, featuring a Multi-Resistant Coating (MRC) for durability and easy cleaning. The Slim design is optimized for wide-angle lenses to avoid vignetting, featuring a brass ring that is durable and resists binding. KSM models are premium B+W circular polarizers featuring superior, high-transparency, and neutral-colored polarizing foil, designed with a cemented, edge-sealed construction. KSM filters (now discontinued, replaced by the Nano Master series) are renowned for durability, high extinction ratios to eliminate unwanted reflections, and superior image quality compared to standard polarizers.This filter sells new for $204 US. Includes: Schneider Kreuznach protective filter cover when filter is attached to a lens.