Marumi DHG Super Circular Polarizer CPL 82mm All products of the Marumi filter are manufactured at our factory located in Minami-cho, Kamiina-gun, located in the center of Nagano prefecture, Japan. Marumi has continued to focus and solely manufacture and develop camera filters for a long time. They have developed the world's first "DHG" filter for digital single lens based on its technology and experience. The Marumi filter will continue to evolve with everyone who loves photographs and will love the camera. Made in Japan