– Turn any Leica M lenses into autofocus. – Turn manual lenses in other mounts (e.g. EF, FD, AI, M42, PK, OM, MD, etc) into autofocus by stacking additional adapters. – Internal motor for rapid autofocus experience – Support AF-S, AF-C, AF-F – Support Face / Eye detection – Optimal 4.5mm max. extension to reduce unnecessary damages to the motor and ensure rapid AF speed – Extend the closest focusing distance of specific lenses – Firmware upgradable via the USB update hub – Suitable to use in Nikon Z6, Z7, Z5, Z50, Z6 (ii), Z7 (ii)