The canon gp e2 gps receiver is a compact lightweight gps unit that sits on the hot shoe and makes it easy for photographers to geo tag their images a gps logger function also allows photographers to track their route by downloading gps data at regular intervals whether the unit is attached to the camera body or stored in its case the gp e2 is compatible with the eos 1d x eos 7d via firmware update connection via cable only see our further details tab and new eos 5d mark iii the gp