abstract:Diax is a series of 35mm viewfinder and rangefinder cameras made from 1947 to 1957 by the company Walter Voss based in Ulm (Germany). A characteristic model was the Diax Ia for interchangeable lenses, with 3 different viewfinders in the top, each in a different color: blue for 35mm lenses, yellow for 85 or 90mm lenses and neutral for 45 or 50 mm lenses.