The history of the first Nikon camera began with its development in 1945.
The camera was designed and samples were produced during the difficult times that immediately followed W.W. II.
During the process, many problems were encountered, and the skill required was somewhat higher than Nippon Kogaku had forecast.
Once they realized this, they stepped up their efforts to improve the camera and make adjustments in various areas, and finally released it in March of 1948.
Soon thereafter, the photofinishing laboratory ran into problems due to the modified picture size — the film was being cut in the middle.
To compensate, they returned to the seven perforation design, so that the picture would not automatically get cut in the middle.
At the same time, they worked on enlarging the picture width, but this all proved to be very difficult.
There was not enough room inside the shutter, so the frame was asymmetrically widened at first. This meant that the light beam from the lens and the center of the picture frame had shifted, just like the shifting control of the PC Nikkor lens, which came later.
As the shutter was improved, this "shifting" was later solved.
This 24 x 34 mm-format Nikon camera was called the Nikon M, and was released in October of 1949. (In order to distinguish between the very first Nikon camera and this later edition, many people refer to the original one as the "Nikon I [One]").
Nikon had created a camera that virtually ensured steady sales through improvements in film advancing, picture size, and other areas.