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The Ontoflex is an unusual TLR, made by Cornu, France in 1934. It takes 6×9 pictures on 120 film. The Ontoflex has a special provision to rotate the camera back to allow for portrait and landscape oriented pictures. The taking lens is a 75/3.5 Tessar in a Compur Rapid B, 1-1/400s shutter.


The Ontoflex A takes only rollflm, the model B has interchangeable plate or rollfilm backs.

NOUVEAUTE modele REDUIT 1935 with rotating back. Modele A (non removable film only) and Model B (removable for film or plates)