Manfrotto has announced a ‘Top Lock’ quick release system for its tripod heads that’s compatible with standard Arca Swiss-type plates. It uses a clamp design that allows the camera to dropped in from above rather than slid in from the side, and three bubble levels to help keep the camera straight. The Top Lock release is available as an add-on adapter, or pre-installed on the company’s top-end 054, 055, 056 and 468MG ball heads.