high pixel counts with large CCDs and compatibility with the Mamiya 645AFD range and RZ/ RB series (via specially manufactured adapters). All the backs are compatible with 4x5 inch view cameras. In the final quarter of 2009, Mamiya released its Mamiya 645DF camera, the latest and digital-only version of the famed 6x4.5 format AF camera series. The Mamiya 645DF has many improved features including mirror-up delay, lack of shutter lag, AF preference with priority on speed or precision, and compatibility with the new leaf shutter lens range (Mamiya Sekor AF 80mm, 55mm and 110mm D lenses with in-built leaf shutters). With these lenses attached, flash synchronizations speeds of up to 1/1,600 of a second are achievable, although the camera can also be programmed to use the focal plane shutter even if a leaf shutter lens is attached. 2010 saw the release of 3 Mamiya DM Systems (Mamiya DM33 System, consisting of a 645DF camera body and 33MP digital back, the Mamiya DM28 System, consisting of a 645 AF III camera body and 28MP digital back, and the Mamiya DM22 System, consisting of a 645 AF III camera body and 22MP digital back. A new logo and webpage were also launched. Mamiya America Corporation In the United States, the trademark for "Mamiya" was not owned by the original company in Japan but rather by a wholly separate entity called Mamiya America Corporation ("M.A.C."). As such, all products that bear the name "Mamiya" were controlled by M.A.C. and resulted in considerably higher retail prices compared to outside the United States. As of 2014 MAC group no longer manages the Mamiya brand in America, all sales, service and support was transferred to Phase One who already owned a large portion of Mamiya. Products 6×4.5 cm format / Medium Format Professional For a detailed description of 6×4.5cm Mamiya products, see Mamiya 645 Mamiya 645 6×6 cm format / Medium Format Professional Mamiyaflex C Professional (1956) Mamiyaflex PF (1957) police model Mamiyaflex C2 Professional (1958) Mamiya C3 Professional (1962) Mamiya C33 Professional (1965) Mamiya C22 Professional (1966) Mamiya C220 Professional (1968) Mamiya C330 Professional (1969) Mamiya C330f Professional (1975) Mamiya C220f Professional (1982) Mamiya C330s Professional (1983) Mamiya 6 — electronic 6 cm × 6 cm rangefinder camera 6×7 cm format / Medium Format Professional Mamiya RB67 Professional (1970) — mechanical 6 cm × 7 cm SLR medium-format camera Mamiya RB67 Professional S (1974) —