Fujifilm produced Fujicolor Natura 1600, a high-ISO color negative film, from 2003 through 2017. It was only sold in Japan, but it became renown worldwide as word got out about this wonderful film. A lot of speculation has surrounded it. Is it simply renamed Fujicolor Superia 1600? Many people think so. Is it slightly modified Superia 1600 for Japanese skin-tones? Some people think so. Is it slightly modified Superia 1600 made specifically for the Fujifilm Natura camera? Perhaps so. I haven’t found any definitive evidence to conclude if Natura 1600 is unmodified Supera 1600 or a slightly modified variant of it—if it isn’t identical, it’s very similar.