The easiest and quickest solution for locking camera plates securely in place with a new lever-actuated system. One jaw is adjustable to accommodate various Arca plate sizes, then the lever can be opened and closed quickly. A locking pin ensures that the QR plate cannot slip out of the base when opened. This base is additionally equipped with two bubble levels to facilitate horizontal and vertical alignment of the camera. Arca-compatible and adjustable to various Arca plates.