ALPA Lens to Leica M with 6-bit Adapter


Perfect Fit For ALPA Lens:

  • Alpa Kern Macro Switar 50mm/F1.8
  • Alpa Kern Macro Switar 50mm/F1.9
  • Leica M2, M3, M4, M5, M6, M7, MP, M8, M9 and other M mount cameras

Distinguishing Features:

  • Weight lighter than all other ALPA adapters yet more solid.
  • Directly adapt your ALPA 50mm Lens to Leica M Mount. No additional LTM adapter necessary, leading to better stability and accuracy.
  • Fit all ALPA 50mm Lenses: we test multiple samples of Kern Macro Switar 50mm to ensure fit and accuracy on a Leica M mount camera.
  • Rangefinder coupled - the focus of the lens matches the rangefinder of your Leica M camera. If your Lens cannot match your Leica M camera, we modify your lens and adapter to match the focus free of charge, except for a shipping.
  • With the 6-bit coding, older ALPA 50mm Lenses receive new markings on the bayonet ring. These markings help digital Leica M-Cameras recognise the lens type and optimise the image quality.

Why Metabones®?

Since its inception, Metabones has been designing and manufacturing lens adapters recognized among professionals and enthusiasts as leaders in design and workmanship.

Contrary to the popular trend of other factories using an aluminum ring painted black on the camera-body-side, we instead take no short-cut but use precision-machined brass with chromium plating on both the camera-body and the lens sides of our adapters, in order to ensure smooth mounting, great appearance, and durability. The lens side of the adapter features a strong leaf-spring structure, strengthening the adapter-lens connection and ensuring tightness of the lens in order to reduce wear and prevent focus errors and optical alignment issues from appearing.

Metabones uses matte-black treatment to keep internal reflection to a minimum in order to maintain the maximum optical quality possible with the lens.

All Metabones Adapters follow this tradition of uncompromising precision, robust build quality and outstanding finish. Our new Smart AdapterTM series of products add industry-leading electronic interfacing technology from Canada, with true electronic control of the lens' aperture directly from the camera body.


Our Smart AdapterTM  series adapters have the following additional features