Canon EF Lens to Sony NEX Smart Adapter (Mark IV)
EF-E-BM4 Features:
True electronic integration of aperture diaphragm - let camera automatically choose aperture in P or S exposure modes, or dial in yourself on the camera body in A or M modes.
Powered by camera body. No external power source required.
Wide open button (opposite of depth-of-field preview function) makes manual focusing easy.
The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo cam ball heads.
High performance 32-bit processor and efficient switched-mode power supply.
Disclaimer: Metabones is NOT licensed, approved or endorsed by Sony or Canon.