The Phase One 645 DF system camera is the only modern medium format system camera with focal plane shutter and leaf shutter. Special Schneider-Kreuznach or Phase one lenses with built-in leaf shutter must be used for having both choices. Alternately Phase One's Digital Lenses can be used, as well as Mamiya 645 AFD lenses, of course only with focal plane shutter. Phase one recommends its medium format digital backs as media, for example its 30-Megapixel module Phase One P30. Since medium format digital backs are almost standardized Leaf Aptus modules or others can be adapted to the camera.
- technical specs on Phase One homepage