The kirk l bracket for the canon eos 5d mk iii digital slr is a custom made one piece aluminium l bracket for the canon 5d mkiii when attached it allows full access to all the switches including full use of the remote control and battery drawers and allows quick changes from horizontal to vertical composition and vice versa without having to adjust your tripod andor tripod head the kirk l bracket also helps to protect the camera body and keeps the weight of the lens and body over the tripod