The original Nikon I, as introduced in 1948, had no flash synchronisation, but was otherwise a fully-fledged up-to-date rangefinder camera. The factory chose the 24 × 32 mm frame size pioneered by the Minolta 35 launched a year earlier by Chiyoda Kogaku, known as the Nippon format, which yielded more frames per length of film, and matched more closely the common paper sizes.
However, the camera never caught on, because the US administration in Tokyo did not permit export to the US due to the non standard format, incompatible with the Kodak slide mounts.
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