This Pro Lens Adapter from Fotodiox enables the use of your Pentax 645 lenses on Canon EF-mount DSLR cameras. It features a durable brass construction with stainless steel finish, a leaf spring ensures a secure connection between the lens and adapter, and its design also maintains infinity focus.

Pentax 645 Lens to EF-Mount DSLR    Maintains Infinity Focus    Leaf Spring Mount Design    Brass with Stainless Steel Finish

This manual adapter does not maintain automatic lens control between the camera and lens; aperture priority or manual shooting modes should be used, as well as stop-down metering for exposure control.

Related Questions and Answers

Q: 1. will this work with canon 5d mark 3? And will this work with Mamiya 645 AF lenses?

A: I use it to attach my Mamiya 645 lenses to my Canon 6D, the baby-brother of the 5DM3, and it works fine. It's not as perfect as having it hooked up to your Mamiya, but it never will be. But you will unlock the greatness of a medium-frame format lens onto a full-frame 35mm equal and the results are like nothing you can get from a Canon lens. I'm not saying superior, but in many ways, they're up there with the traditional L lenses, and if you bought the Mamiya lenses used, you probably didn't spend the L prices. Good luck.

Q: 2. Is this a locking adapter?

A: The FotodioX Pro Lens Mount Adapter for Contax 645 Lens to Canon EF-Mount Camera has a leaf spring which ensures a secure connection between the lens and adapter

Q: 3. Wil this work on the Canon 6D? If not is there any adapter which will allow me to use Mamiya 645 lenses on the Canon 6D?

A: Yes, this adapter would work on the Canon 6D as well as other Canon EOS digital or film SLR cameras.

Q: 4. Will this work on 645d? With mamiya 645m lenses?

A: This adapter allows your 645 manual lenses to fit a Pentax digital or film body

Q: 5. Is the 645 format a standard like MFT? Meaning, is the Pentax 645 the same mount as a Mamiya 645? Will this adapter work with Mamiya or Schneider-Kreuznach lenses that use the Mamiya 645 mount on Fujifilm GFX cameras? TIA.

A: The Pentax 645 and Mamiya 645 offer the same film format, but with different mounts for their respective lenses. This adapter accepts Pentax 645 lenses that originally worked on the Pentax 645/645AF medium format film bodies or 645Z medium format digital body.

Q: 6. will this adapter work on the K3II??

A: The K3ll uses the standard K mount lens, so the good news is all Pentax K lenses from the last twenty + years will fit directly. The Pro Lens Mount adapter will therefore also work for Maymiya 645 Lenses to mount on the K3lll.

Q: 7. Would this Adopter fit on Mamiya 645 afd to Canon 7d?

A: Canon 7D has the same mount with 5D. It fits Mamiya 645 Sekkor C lenses on 5D so it would do it on 7D as well.

Q: 8. Will this adapt a Mamiya 75mm Lens from the Polaroid 600SE?

A: Although the Polaroid 600SE used Mamiya lenses, the 75mm lens from that camera cannot work with this adapter.

Q: 9. Will this adapter make a 50mm Mamiya 645 lens act like a 50mm lens on my full-frame Canon DSLR, i.e. is it a focal reducer?

A: The FotodioX Pro Lens Mount Adapter for Mamiya 645 Lens to Canon EF-Mount Camera is not a focal lens reducer and has no built-in optics. If you are using a lens designed for the Mamiya 645 film camera, as there are no conversion optics inside the above lens mount adapter, a 50mm 645 medium format lens would be the rough equivalent of a 31mm lens used on the full-frame 35mm sensor.

Q: 10. do you attach adapter to pentax645 z first OR you attach Hasselblad lens to the adaptor.?

A: attach lens to adapter first!