Fotodiox Pro Lens Mount Adapter with Aperture Control Ring - Voigtländer Bessamatic / Ultramatic Mount Lenses to Micro Four Thirds (M-4/3 MFT) DSLR Mirrorless Camera such as Olympus PEN E-P3 E-M OM

If you have a SLR or DSLR camera and other maker/mount lenses the Fotodiox Mount Adapters allow you to use your lenses on the film/digital camera body. Sharing lenses has some distinct advantages. Certain prime lens just can t be replaced and you save the cost of purchase on new lenses. Fotodiox offers a range of adapter from large format to smaller format digital adapters. Adapting larger format lens to smaller format sensors (i.e: large format to medium format medium format to 35mm 35mm to micro 4/3) provides excellent edge-to-edge sharpness. The smaller image field helps minimize the effects of lens distortion and aberration by using the sweet spot or center of the larger lens image circle. This Fotodiox lens mount adapter is made with high standard precision. The leaf spring design in the adapter holds the lens tight to the camera body ensuring there is no play between the camera and the lens. The all metal design and polished surface is designed to guarantee smooth mounting and long lasting experiences. This adapter also has a built-in aperture control tab which allows for control over the lens iris. This adapter allows Voigtl?nder Bessamatic / Ultramatic Lenses to fit on a Micro Four-Thirds DSLR mirrorless camera body. Although the lens will fit physically automatic diaphragm auto-focusing or any other functions will not operate correctly while using this adapter. In this case stop-down mode will need to be used when metering since the lens does not have the ability to have its aperture controlled by the camera body. You can shoot with manual mode or aperture priority mode. Infinity focusing is guaranteed. Note: The aperture markings on the adapter are based on a 50mm f/1.9 lens; when used with any other lens the aperture markings will be off (will not represent the true aperture used) however you will still have full range over the lens iris.