Manfrotto LANC Remote Zoom / Focus Control for Sony, Canon Cameras
The 521PROi is a LANC protocol remote control that has improved the 521PRO firmware and its internal electronic components in order to be more user friendly and to cover all the new features of the newest Sony and Canon cameras as the speed zoom and focus control. It is compatible with the auto focus function and AF/MF switch and features a smart function of automatic resetting of the main knob, which grants a constant precision of movement of the remote control. As opposed to the upper level 523PROi, the 521PROi doesn't feature the functionality of REC review. It comes with a longer coiled cord cable that allows a greater distance of the remote control from the video camera.
Manfrotto LANC Remote Zoom / Focus Control