This Kernel lens mount adapter is made with high standard precision. The leaf spring design in the adaptor holds the lens tight to the camera body ensuring there is no play between the camera and the lens. It?s all metal design and polished surface is designed to guarantee smooth mounting and long lasting experiences. It allows Pentax 645 Mount Lenses to fit on a Canon EOS Digital camera body. Manual operation and setting.
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. The added microchip (or dandelion chip) enables the focusing confirmation function with EOS Digital bodies, which helps the the photographer to focus even in dark situations. You can shoot with manual mode or aperture priority mode. Infinity focusing is guaranteed. Does NOT work on Canon EOS 5D Mark III.