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It is an evolutionary extension of the 6008 AF, but with new features such as the open system user interface, a new focus detector, which is able to focus under difficult lighting conditions, and a lithium-ion battery that can be recharged without having to worry about memory loss. The Hy6 ("Hy" for "hybrid") is based on an “open system” design and can easily adapt to advancements in future chip technology by allowing the insertion of larger (higher-resolution) image sensors of up to 56×56 mm, which is physically impossible with the 645-type of medium format cameras such as Hasselblad H or Mamiya/PhaseOne 645. Instead, PhaseOne combined efforts with Mamiya, another medium format camera company. However, as PhaseOne does not participate in the joint project, its digital backs do not connect to the Hy6. In contrast to Hasselblad's decision to turn its H line, starting with the H3D, into a closed system connecting only to its proprietary Hasselblad/Imacon digital backs, the Hy6 is opened to both Sinar and Leaf digital backs. The Hy6 received the TIPA award 2008 for "best medium-format digital system". They became available to customers towards the end of 2007. In mid-2007 the first cameras were delivered to Sinar and Leaf for final testing. Designed to capture images using both digital and conventional film backs, the Hy6 offers photographers a true 6×6 cm medium-format size with the flexibility of a 4.5×6 cm camera. Hy6 prototypes were presented at Photokina 2006 and received the Photokina Star 2006 award for most outstanding new product. Whatever the camera's name, all are assembled by F&H in its Braunschweig factory before they are delivered to Sinar and Leaf for final adjustments with their respective digital backs. The camera's parts are constructed by F&H and by German sub-assembly companies. Most of the development was financed by Jenoptik/Sinar (about 4 mio €), who provided the electronics while Franke & Heidecke developed the mechanics. F&H and Sinar were joined by Tel Aviv, Israel based Leaf (owned by Kodak), who sells the camera under the name "AFi" together with its Aptus digital backs. The Hy6 embodies the technological know-how, precision engineering and manufacturing of three world-renowned companies whose single objective was to create a medium-format camera system that is intuitive in design and second to none in performance. The new system is based on a cooperation between Braunschweig, Germany based Franke & Heidecke and Feuerthalen, Switzerland based Sinar AG (owned by Jena, Germany based Jenoptik). The Rolleiflex Hy6 is a next-generation medium format camera body, based on the long experience Franke & Heidecke acquired with the successful Rolleiflex 6000 series.