The camera was designed in 1938, but the Second World War prevented its release, which finally occurred in 1945.

They had focal plane shutter and interchangeable lenses on a screw mounting.

After 1949, the company developed a bayonet mount version, called "Universel", with a series of lenses all coupled to the rangefinder.

Optique & Précision de Levallois (in short OPL) made its own lenses under the brand "Oplar" and derivatives ("Oplarex", "Oplex"...).

The company also made 35 mm models for amateur market: The production ceased in 1965.