on the camera firmly seated adapter, and Leica optics can be as soft as butter connect to the adapter, just like the original Leica. Did well from Novoflex a Leica M adapter to Sony alpha7. I can understand the Novoflex adapter only strongly advise any who wants to put on precision with the daily handling of value later. For the Leitz / Leica optics are so aligned. I had a Metabones 2 inches / Packaging similarly priced. This Metabones was not as precise processed, too much play with lens attached: the look jerky 1-2mm forward to the Metabones adapter, the adapter Metabones dasgleiche at the Sony a7 camera. This or even with chinaware makes precise manual focusing simply makes no sense and no means joy.
