DMC is an abbreviation for the English term “Digital Multi-Coated.” It refers to a multi-layer coating applied to the glass of photographic filters. It consists of several very thin layers designed to minimize unwanted reflections and lens flare, which can occur when light reflects between the filter and the lens. By reducing reflections, more light passes through the filter to the camera’s sensor, resulting in higher contrast and more accurate color reproduction in the final photograph. This coating also often increases the filter’s resistance to water, scratches, and dirt buildup, making it easier to clean.