Sony, Fujifilm, Panasonic, Pentax, and Olympus.

Founded on July 25, 1917 as Nippon Kogaku Kogyo Kabushikigaisha (?????????? "Japan Optical Industries Co., Ltd."), the company was renamed to Nikon Corporation, after its cameras, in 1988. At least since 2022 Nikon is a member of the Mitsubishi group of companies