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 Lens Mount: Arri PL (Positive

Lens Mount: Arri PL (Positive Lock) Mount Lens Body Mount: Fujifilm X-Series Mirrorless Camera Body Manufacturer: Fotodiox Inc

Lens Mount: Contax N SLR Lens Body Mount: Micro Four Thirds (MFT

This adapter will severely  Vignette when Iris closes down

You can easily find B4 lenses on KEH

The Pro line of adapters is crafted to withstand the rigors and demands of the professional photographer

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 Lens Mount: Arri PL (PositiveFeatures: 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