Rolleiflex is a series of medium format 120 roll film cameras manufactured by Franke & Heidecke, in Germany. The Rolleiflex TLR is currently manufactured in three versions by DHW Fototechnik, the successor of Franke & Heidecke. At Photokina 2012 an updated version of the classic Rolleiflex TLR, the FX-N, has been presented. The Square idea that changed photographic history without any doubt was the introduction in 1929, of the first Rolleiflex Twin Lens Reflex ( TLR ), a sensation: an as ingenious as simple principle that quickly made the Rolleiflex THE must have professional camera all over the world. Producing high quality 6x6 cm square negatives in a compact very easy to operate camera, with the best lens available.