[1] This was because it used a cloth shutter curtain (rather than titanium foil curtains) and it lacked the self-timer and motor drive lug of the S3.
[2] The viewfinder frame-line for 35mm lenses was also omitted.
The camera had a short production run of less than 6,000 units from 1958 to 1960 which makes it rare compared to the other Nikon rangefinders; however not as rare as the Nikon 1 or Nikon M models.
The Nikon S4 was not exported to the United States.
This camera-related article is a stub.