Fotodiox Pro Lens Mount Double Adapter, Mamiya RB67/RZ67 Mount and Canon EOS (EF / EF-S) D/SLR Lenses to Fujifilm Fuji X-Series Mirrorless Camera Body Camera Mount_C-Mount You can easily find B4

You can easily find B4 lenses on KEH

Mounts Nikon Nikkor F Mount G-Type D/SLR Lenses to Micro Four Thirds (MFT) mount mirrorless cameras

Lens Mount: Select Contax G SLR Lens Body Mount: Micro Four Thirds (MFT

This B4 adapter version is a simple mechanical adapter that lets a B4 2/3" lens mount onto a Micro-4/3 (Micro Four Thirds

Fotodiox Pro Lens Mount Double Adapter, Mamiya RB67/RZ67 Mount and Canon EOS (EF / EF-S) D/SLR Lenses to Fujifilm Fuji X-Series Mirrorless Camera Body Camera Mount_C-Mount You can easily find B4Features: Mounts Mamiya RB67 RZ67 SLR Lenses to Fujifilm X series mirrorless cameras; infinity focus or beyond guaranteed Integrated focus control dial for adjusting the lens focus Enhanced craftsmanship and high tolerance construction for demanding professionals Precise fit and solid connection; lens has no play, gap or wiggling when mounted on adapter and no adjustments required Precision all metal construction with chrome plated brass mounts for