Fotodiox, Inc. USA

Fotodiox DLX Stretch Lens Adapter - Compatible with Mamiya 645 (M645) Mount Lens to Nikon F Mount D/SLR Cameras with Macro Focusing Helicoid and

Fotodiox DLX Stretch Lens Adapter - Compatible with Mamiya 645 (M645) Mount - Main image
$116.76 $159.95 In stock

Category: Lens Mount Adapter

  • Description
  • Specs
  • Compatibility
  • Notes

Product Highlights:

  • • Built-in focusing helicoid provides macro focus for any lens as well as correction for back focus & macro
  • • Includes three magnetic drop-in filters (ND4, ND8 and ND16) for light control with any lens
  • • Precise fit and solid connection; no play, gap or wiggling, no adjustments required
  • • Precision all-metal construction with chrome plated brass mounts for secure, solid fit
  • • Limited 2-Year Manufacturer Warranty

The Fotodiox DLX Stretch Adapter allows you to extend the lens from the camera body giving the ability to focus closer than normal as well as correct for any possible back focus the lens may have, in effect this adapter acts like a small built-in bellows. Additionally this adapter has an internal spot for adding one of the included magnetic drop-in filters to give you further creative control over your image.

Fotodiox employs Professional Photographers in every aspect of development and design to create products that are built to last. The DLX line of adapters is crafted to withstand the rigors and demands of the professional photographer. Our adapters are manufactured with precise tolerances, providing a solid, gap free, no wiggle connection for stress free use. No adjustments needed! Fotodiox adapters are meant to be taken off and put back on your camera as much as needed while remaining as precise as the day you bought them.

Fotodiox DLX adapters feature all-metal, no plastic construction to create a secure connection between your glass and camera that will not degrade over time, keeping the lens-camera connection secure with every use. We use chrome plated brass mounts for enhanced durability and reliability. All Fotodiox products are backed by our 24-month Fotodiox Manufacturer Warranty.

Back to Highlights

Lens Mount Mamiya 645 (M645) Mount Lens
Body Mount Nikon F Mount D/SLR Cameras
Drop-In Filter Size 40.7mm Threadless (Magnetic) Filters
Extension Amount 0.4 in (1 cm)
Product Dimensions 3 x 3 x 0.8 in (7.6 x 7.6 x 2.1 cm)
0.3 lb (4.7 oz)
Shipping Dimensions 5 x 5 x 5 in (12.7 x 12.7 x 12.7 cm)
1 lb (16 oz)
Manufacturer Fotodiox Inc.
Warranty Limited 24-Months
  • • 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.
  • • All lenses will focus at least to infinity, some may just focus a little past. So if your lens is not in focus when the focusing ring is set to the infinity mark, this is due to how Focal Flange Distance (FFD) works and how we must compensate for all lenses of its type made over the years with the differences in tolerance. Visually focusing using the viewfinder or camera screen is the best way to ensure proper focus, not the distance markings as they may not match up 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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Customer Reviews (4.2 / 5 · 5 reviews)

Sofia ★★★★★

Finally got this adapter to use my old Mamiya 645 lenses on my Nikon, and the built-in focusing helicoid makes precise macro adjustments surprisingly smooth — no more fumbling with extension tubes. The magnetic drop-in filter system is a clever bonus that actually works well for quick swaps.

John ★★★★★

I was hesitant about the magnetic drop-in filters, but they click into place perfectly and make swapping filters mid-shoot effortless. The helicoid ring allows smooth macro focusing without needing a separate extension tube, which saved me money.

Eva ★★★★★

The magnetic drop-in filters are a game-changer—swapping them mid-shoot takes seconds instead of fiddling with thread-on rings. The helicoid gives me true macro focus with my M645 glass, which I wasn't expecting from a simple adapter. Solid build, no wobble on the Nikon body.