Mamiya 645 DF (2009–)
The Mamiya 645 DF is a medium format camera body built around the Mamiya 645AF lens mount. It is meant to pair with a digital back instead of a fixed sensor. It came out in September 2009 as an open-platform system, and Mamiya Leaf showed it alongside new lenses and digital backs at photokina 2012. It is the only 645 medium format camera that supports both focal plane and leaf shutters. Flash sync goes up to 1/1600s, and exposure times run up to one hour. It was designed for digital backs from 22MP to 80MP, with an image area roughly three times that of 35mm.
The 645DF+ variant also appears in the record, and some sources date it to 2008. The relationship between the DF and DF+ is not explicitly documented. They show up as separate model names, and no source says whether one succeeded or replaced the other. The DF+ is described as an open platform for maximum compatibility. It accepts Mamiya digital lenses, Mamiya AF/AFD lenses, or Hasselblad V lenses. It handles 120 and 220 roll film backs, gives an actual image size of 56 x 41.5 mm, and is characterized as a 6 x 4.5 cm format AF single lens reflex camera.
The camera was pitched at professionals. ePHOTOzine (September 2012) described it as designed to be the most reliable and durable medium format camera on the market. One review acknowledged the DF+ carries "a large price tab" while questioning whether it is worth the cost. Used listings suggest the rubberised grips can begin to unglue with age. Bodies are generally described as tested and working.
Known specs:
- Medium format camera body, Mamiya 645AF lens mount
- Designed for digital backs, 22MP–80MP
- Supports both focal plane and leaf shutters
- Flash sync up to 1/1600s; exposure times up to 1 hour
- Image area approximately 3x that of 35mm
- DF+ variant: 56 x 41.5 mm image size; accepts 120/220 roll film backs
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