With its rounded corners and edges, the PG-40N Camera Plate for Canon 40D Body from Markins is designed to custom fit this camera body while feeling ergonomically comfortable in your hand. The bidirectional dovetail design can mount vertically or horizontally in any direction into an Arca-type-compatible clamp. The plate is constructed from Duralumin, and it has a black anodized finish that is scratch resistant. With a 1/4'-20 threaded camera mount, the camera plate attaches directly to the body, and a 1/4"-20 threaded socket is located on the bottom to attach to a monopod if no clamp is available.