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Mount adapters

Specialty Mount Adapters
Medium format lens to APS or full size digital


 Medium format lens on 35 mm 2

Our medium format to digital and film SLR mount adapters use a T mount system, allowing you to use your lenses on a variety of camera bodies (simply order the adapter with a T2 ring for your camera).


Medium format lens on 35 mm 1


If you have a 35 mm or interchangeable lens digital camera and a medium format SLR, the Zörk Mount Adapters allow you to use your medium format lenses on the 35 mm or digital camera body. Sharing lenses has some distinct advantages: you save cost and weight ­ especially if you decide to take both cameras on a job; you use the sweet spot (central 2/3) of the medium format lens, for excellent edge-to-edge sharpness; and the smaller 24x36 mm image field helps minimize the effects of lens distortion and aberration.


Zörk Mount Adapters come in a range of medium format front mounts and T system rear mounts. You simply select a T2 adapter ring for your camera, attach it to the adapter, and you're ready to use your medium format lenses on your 35mm or digital camera. The T2 system allows you to use your medium format lenses on more than one 35mm or digital camera mount. With the adapter ring in place, the spacing between the lens and camera body precisely matches the optical register (film plane to lens flange distance) of the original medium format camera, thereby assuring accurate focusing throughout the range from infinity to close up.

Yes, there are other such adapters on the market - what makes these adapters from Zörk the best? We make ours from aircraft grade aluminum that is anodized for low reflectivity. Moreover, ours offer precise centering and exact lens-flange-to-image plane spacing, so that your medium format lenses will perform optimally. Our adapters are designed for rugged professional use, and made to last over years of daily use.

Available mounts: Hasselblad 500, 200 / 2000 series, Mamiya 645 (manual focus only), Pentacon Six (Zeiss Jena), and Pentax 6X7.

T2 adapter rings are available for virtually all current 35 mm and interchangeable lens cameras: Canon, Chinon, Contax MM and N mount, Fujica, Konica, Leica R, M 42, Mamiya ZE, Minolta, Nikon F, Olympus, Pentax, Ricoh, Rollei, Yashica etc. ­ also  movie and video cameras with C-mount fitting and Sony M 3 bayonet. When ordering Zörk Mount Adapters, please specify the medium format lens and the camera body you wish to use.


Cross-platform adapters for digital and film cameras

We offer a variety of adapters for using lenses from one 35mm camera system on another. Among our most popular are Nikon, Contax, or Leica R for Canon EOS film and digital cameras. We also offer a Pentax 42 SM to Sigma adapter. These are pro-quality, precision adapters that assure precise lens to image plane alignment and will hold up under professional use.


Understanding focal length and image size

Lenses of a given focal length produce the same size image regardless of camera or film format. However, because of the cropping effect of a smaller format relative to the original format for which a lens was designed, a standard medium format lens ­ such as 80 mm, becomes a short telephoto lens on a 35mm camera or a medium telephoto on a 1.5 multiplication factor digital body. What is important to remember is that each focal length has a distinct perspective or 'look' - the rendering of spatial relationships (such as geometric compression or elongation) and depth-of-field at a given aperture. These effects are format-independent (i.e., an 80mm lens, while appearing "normal" on a medium format camera, will produce the same perspective as an 80mm "short telephoto" on a 35 or full frame digital camera). For this reason, it is more appropriate to describe the effects of a lens in terms of cropping or image size relative to format than "magnification factor," which is commonly used in comparing 35mm lens coverage with APS-size digital sensors.

Metering and exposure
The only limitation in adapting a lens to a camera for which it wasn't originally designed is the loss of the auto-diaphragm function. This means that you have to stop down the lens manually for exposure and rely on working-aperture meter readings. Nevertheless, aperture-priority auto exposure systems remain operative as do most metering modes.


Medium Format Cross-platform adapters



Zörk also offers Cross-platform specialty adapters for medium format cameras, such as Pentax 67 or Hasselblad to 645 format cameras from Mamiya, Pentax, and Contax. Other models allow the use of the excellent Zeiss Jena Pentacon 6 lenses on Mamiya, Pentax, or Contax 645 cameras. We also offer an adapter for the 300 mm Pentacon and 500 mm Practicar lenses to medium format cameras.

We also offer a unique Mamiya 645 to Contax 645 cross-platform adapter. This adapter allows the use of Mamiya lenses on the Contax 645 with the full focusing range from infinity to close up. For further adaptations please see our Product Guide or contact us.



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