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situations. Nikon's Speedlight units are: (Update September 15, 2014) SB-1 (discontinued) SB-2 (discontinued, c. 1970) SB-3 (discontinued, c. 1970) SB-4 (discontinued

named Nikon, see Nikon (disambiguation). Nikon Corporation (株式会社ニコン, Kabushiki-gaisha Nikon?) (UK /ˈnɪkɒn/ or US /ˈnaɪkɒn/;  listen (help·info)[nikoɴ]),