After 7 years of development, the Techart Leica M to Sony E Autofocus Adapter has returned with better autofocus performance, sleeker design and way more powerful motors. 4 radially positioned, small and light servo motors 4-axis support guarantees much faster focusing Support heavier lenses without wobbling World’s first bulge-less design and more obstructions with accessories New unicase machining technology further compressed the adapter’s size Compatible with all the latest Sony Full Frame & APS-C camera models (A7R4, A7R, A1, A9ii, A7C, A6600, ZV-E10, etc) USB Update tool included Support in camera 3-axis image stabilisation and relies on the phase detection AF of the Sony cameras to turn your manual lenses into autofocus lenses. Optimal 4.5mm extension balances AF speed and usability. Stack additional adapters to enjoy autofocus with literally ANY lenses (EF / F / OM/ PK/ FD / LR / L39, etc) Compatibility:Lens: all Leica M series lenses, Zeiss M, Voigltander M lens, and other M mount lens by exchange connector ) Cameras: Sony A7RII, A7II, A6300, and so on. Please refer http://techartpro.com for firmware update.M mount lens adapters are available in our store.