A Protector Filter is a popular addition to camera equipment as it protects the front element of the lens from scratches, dirt, water and other foreign objects. It can also make cleaning the lens easier, as you can simply remove the filter and clean it instead of the lens. HOYA FUSION ONE is a new series of filters based on the new HOYA optical technology. HOYA FUSION ONE complements the HOYA filter product line by merging all the highly valued basic specifications, such as multi-layer coating, ultra-high light transmission, high quality optical glass and low profile frame, while newly incorporating a dirt and water repellent coating to meet the new standards in the photographic optical accessories industry.