The FotodioX Pro TLT ROKR Tilt-Shift EF-Mount to MFT-Mount Lens Adapter mounts EF-Mount lenses on an MFT-Mount camera body. It carries no optical elements, so focal length, maximum aperture and image circle are unchanged. It tilts 10° to swing the plane of focus and shifts ±10mm to correct converging verticals, movements the lens itself does not provide. The camera cannot set aperture or drive focus through the adapter; both stay on the lens.