Mamiya lens mount adapter HBB - Black. Mamiya has released two Mamiya Lens Mount Adapters that allow the use of Hasselblad V-series medium format lenses on Mamiya 645AF series cameras (645AF, 645AFD, and 645AFD II). They provide the mechanical interface and precise flange-to-film plane distance required for proper focusing of Hasselblad lenses. The adapter allows the photographer to use their existing Hasselblad V series lenses on the high-precision Mamiya 645AF/645AFD/645AFD II. To use the lenses, simply focus with the lens wide open (the camera provides focus confirmation assistance), then stop-down for proper exposure meter readings. The 645AF/AFD/AFD II can use aperture priority or manual metering modes. The adapters come in black (NR404) or silver (NR405).