Nikon's Ohi plant in the Ōi district of Shinagawa, Tokyo was first built in 1918 after the formation of Nippon Kogaku K.K. in 1917. Nikon's first camera, the Nikon (1946) was made in this plant. Early cameras like the Nikon I (1948), Nikon M (1949), Nikon S rangefinders and Nikon F,F2 were also made in this plant.