This Leaf wireless back is made specifically for the Contax 645AF Camera. But, Leaf designed Valeo 22Wi backs for other camera brands. The 22 megapixel digital system captures images at a rate of 1.2 seconds per frame and optimizes a full 645 frame, enabling correct focal lens behavior. View images off-camera on a pocket PC. The 22Wi system is only Mac compatible. Minimum requirement of a Powerbook G4. The PowerMac G5 is recommended.