This Smart Adapter features true electronic integration of the aperture diaphragm, which lets the camera automatically choose aperture in P or S exposure modes, or dial it in yourself on the camera body in A or M modes. A wide-open button (opposite of depth-of-field preview function) makes manual focusing easy.
Powered by the camera body, it requires no external power sources, and is compatible with Arca Swiss, Markins, and Photo cam ball heads through its detachable tripod foot.
