Nikon first SLR has a shutter priority automatic exposure was launched in September 1964: Nikon Auto 35.
Nikon Auto 35 is still one can not replace the lens leaf shutter the SLR Lens-Nikkor-H 48/2, but the viewfinder design is no longer to use reflectors Porra-mirror system, but the SLR pentaprism . This modification is actually Porra-mirror system, the viewfinder is very dark, and the magnification can not improve.
Originally, since it is SLR, the top of the fuselage there is no need to be made so straight. Is said to mimic the shape of the Agfa Optima IIIS, Agfa’s very strange shape, the designers also believe that this appearance will be popular in Japan.