Manfrotto-Type Plate
The KZ-50 Quick Release Assembly and Camera Plate, which has a 3/8"-16 socket, can attach to tripods, tripod heads, brackets, or video rigs that don't have a quick-release system.
The plate attaches to cameras with a 1/4"-20 socket, and the camera releases from the assembly by pulling on the latch, but it also has a secondary safety latch as a precaution to prevent the camera from falling out.