Fotodiox Pro Lens Adapter with Built-In Aperture Control Dial - Compatible with Sony Alpha A-Mount (and Minolta AF) DSLR Lenses to Nikon 1-Series Mirrorless Cameras Lens Mount_Nikon G Lens Mount Leica R SLR

Lens Mount Leica R SLR Lenses Body Mount Pentax Q (PQ) Mount Mirrorless Cameras Product Dimensions 2

which depending on the lens is either stopped down to its largest f-stop or opened up to its smallest f-stop

however some enterprising individuals have come up with some kludge solutions that may be worth trying: Fotodiox adapter to mount Mamiya E lenses on Sony E cameras by Visual Miscellany

the rear part of the lens will hit the mirror house of Canon's full frame camera

M4/3) Mount Mirrorless Camera Body Manufacturer: Fotodiox Inc

Fotodiox Pro Lens Adapter with Built-In Aperture Control Dial - Compatible with Sony Alpha A-Mount (and Minolta AF) DSLR Lenses to Nikon 1-Series Mirrorless Cameras Lens Mount_Nikon G Lens Mount Leica R SLRDescription Specs Compatibility Notes Product Highlights: Mounts a Vast Range of Vintage Workhorse Lenses to Modern Digital Cameras Versatile, Dependable, Adaptable Add Style & Character to your Image 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 Secure and Solid Fit Limited 2 Year Manufacturer Warranty Mount