Fotodiox, Inc. USA

Fotodiox Pro Lens Mount Adapter - Mamiya 645 mount SLR Lens to Micro Four Thirds (MFT, M4/3) Mount Mirrorless Camera Body

Fotodiox Pro Lens Mount Adapter - Mamiya 645 mount SLR Lens to Micro Four - Main image
$59.79 $91.99 In stock

Category: Lens Mount Adapter

Features:

  • Mounts Mamiya 645 (M645) Mount Lenses to Micro Four Thirds (MFT) mount mirrorless cameras; infinity focus or beyond allowed
  • 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 secure and solid fit
  • 24-Month Fotodiox warranty

Mirrorless cameras aren't only revolutionary because of their compact size; they're even more versatile for mounting lenses than their full-sized counterparts! Fotodiox offers strong support for mirrorless camera platforms with hundreds of options for mounting both modern and vintage lenses. Our adapters deliver infinity focus, manual aperture control, and a sturdy build for lasting quality.

Lens Mount: Mamiya 645 (M645) Mount Lens
Body Mount: Micro Four Thirds (MFT, M4/3) Mount Mirrorless Camera Body
Manufacturer: Fotodiox Inc.
Warranty: 24 Months


Note:

  • • Newer M645 Mount lenses designed for the Phase One system will not fit this adapter, only the older Mamiya-era M645 lenses will work with Fotodiox adapters properly.
  • • This is a manual adapter, so lens functions that rely on electronic communication with the camera body (autofocus, AE metering, image stabilization, etc.) will be disrupted.
  • • Some cameras need to be set a certain way to work with our adapters or you may get a message such as 'Error Lens Not Attached - Check lens'. Please check the support articles on the Fotodiox Knowledge Base for possible solutions on a variety of camera brands.
  • • 'Focus-By-Wire' lenses (such as Canon's STM or Nikons AF-P) requires power to engage the manual focus rings on the lens, since manual lens mount adapters do not power the lens, those lenses will not be able to focus.
  • • Set your exposure manually or meter using your camera's Aperture Priority (stop-down) mode.
  • • If your lens does not have a manual aperture control ring, the lens aperture will revert to its default position, which depending on the lens is either stopped down to its largest f-stop or opened up to its smallest f-stop.
  • • To determine what the new 'Crop Factor' or 'Equivalent Focal Length' of the lens when used on your camera will be, please check the Fotodiox Knowledge Base article.

All pictures are for illustration purposes only. Actual product may vary slightly due to ongoing improvements in design.

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Christopher M. ★★★★★

I was worried about losing infinity focus with an adapter, but this one locks on perfectly sharp at infinity with my Mamiya 645 lenses. The brass mounting ring feels reassuringly precise when I twist it onto my GH5.

Penelope ★★★★★

The build quality is solid—no wobble or play when attaching my 645 lenses. It locks onto my Lumix body securely and achieves true infinity focus, which was exactly what I needed for landscape shots. A reliable adapter that finally lets me use my vintage glass.

John H. ★★★★★

My Mamiya 645 lenses finally feel at home on my GH5. The infinity focus locks in perfectly, and the all-metal construction gives me confidence it’ll hold up to heavy use.