[1] It is one of the three top-quality subminiature cameras (the others are Minox and made in Italy Gami 16).
Light rays entering the viewing lens are refracted by a prism and form a bright, life-size image on a piece of ground glass; the eyepiece is adjustable for sharp image.
[4] Unlike an ordinary twin lens reflex camera, the Goerz Minicord image is not only right side up, but also unreversed, due to the use of a prism instead of mirror.
[5][6] Minicord is the only twin lens reflex camera in 16 mm subminiature photography.
In 1953, C.P.Goerz introduced Goerz Minicord III, with key feature same as previous model, but with flash sync added.