ClearMax 37mm High Resolution 3-piece Filter Set (UV, Fluorescent, Polarizer) - For Sony HDR-SR11, HDR-SR12, HDR-HC9 Multi-coated optical glass for enhanced optical resolution. FILTER UV: Protects your camera's lens from scratches, dust, dirt, moisture, and fingerprints, while reducing unwanted ulra-violet light. FILTER FD: The F-DL fluorescent light correction filter gives true-to-life color rendition by removing the harsh yellow-green cast ordinarily resulting from fluorescent bulbs. When shooting under natural light, a fluorescent filter dramatically increases color satruation of subjects. FILTER PL: Polarizers let you acheive vibrant color saturation, reduce or eliminate glare and reflections from non-metallic objects and glass surfaces, and minimize haze. The filter can be rotated to determine the amount of reflection to be removed. Includes protective carrying case. Made in Japan. Backed by a 15 year USA warranty.