Some readers are probably not aware that photographer David Douglas Duncan (1916-2018) made the Nikon and Nikkor brand names known all over the world when he was covering the Korean war in 1950:
“Mr. Duncan shot in black and white, with lightweight Leica cameras and Nikkor lenses, made by the Japanese company Nikon, that he helped popularize in the West. He focused on the eyes and inner anguish of such Marines as Capt. Ike Fenton, whose men ran out of ammunition during one engagement with the enemy, and Cpl. Leonard Hayworth, a machine-gunner reduced to tears.” (Washington Post)
https://www.youtube.com/watch?v=UUvHAa1M7D4
“In 1950, an encounter took place that immensely changed the fate of Nikon and NIKKOR lenses. At the beginning of June that year, David Douglas Duncan, who was a LIFE magazine photographer, Horace Bristol, a Fortune magazine photographer and Japanese photographer Jun Miki visited the Ohi Plant of Nikon Corporation (Nippon Kogaku K.K. at that time). What had prompted their visit was Mr. Duncan’s portrait taken by Jun Miki, who was then the only Japanese LIFE photographer with a NIKKOR P.C 8.5cm f/2 lens. Mr. Duncan was so surprised by its sharpness that he suggested visiting Nikon Corporation, arranging it with a single phone call that would ultimately have great consequences.
At the plant, Nikon personnel showed them a lens performance comparison between the Leitz and ZEISS lenses, which were carried by Mr. Duncan and Mr. Bristol at that time, and NIKKOR lenses, by using a test projector. Directly after they saw the outstanding performance of NIKKOR lenses, they purchased them for Leica on the spot. Then, carrying the lenses with him, Mr. Duncan traveled to the battlefront of the Korean War on June 25th. His magnificent photographs created a major impact among American journalists, who were asking “Why is this image so sharp? Did he carry a large-format camera?” Then The New York Times reported Nikon’s excellence with the headline “Japanese camera”. This drew the world’s attention to Nikon and NIKKOR lenses, which provided a unique opportunity for the Japanese optical business to greatly expand its horizons.
Mr. Duncan continued using Nikon cameras and NIKKOR lenses, took photographs all over the world, and created many memorable masterpieces. In 2016, Mr. Duncan celebrated his 100th year, as did Nikon in 2017. Their long relationship continues still.” (Nikon)