Mathieu Stern’s at it again with his crazy experiments. This time, he’s taken the lens off a 120 year old folding camera, and attached it to his Sony mirrorless camera. This is nothing new, but what is new is that he’s given it autofocus abilities.
The first autofocus lenses were released around 40 years ago, so this is quite the feat. He used an ingenious adapter designed to give autofocus abilities to manual focus Leica lenses on the Sony A7 range of bodies. Mathieu then modified the adapter to fit this 120 year old lens.