Compatible with Mamiya 645 Manual focus lenses (not designed for Mamiya 645af or Phase one lenses) on Canon EOS rf-mount Mirrorless cameras; infinity focus or beyond allowed Adapter allows lens to 20mm total shift and 10 degrees of tilt; 360 degrees of rotation built in Enhanced craftsmanship and high-tolerance construction for demanding professionals Precision all-metal construction with chrome plated brass lens mount for secure and solid fit Limited 2-year Manufacturer