Secced SC-Video-10/100VP Operator's Manual page 12

Insert the wedge into the camera plate until an audible click indicates that the Quicklock wedge
is locked in position.
WARNING!
Fig 7
10
When mounting the camera/placing the wedge, make sure not to hold fingers
within the range of the locking lever (9.1) and camera plate receptacle, since the
lever may snap back.
When the camera is mounted, the bowl clamp must only be released if camera
and tripod are secured against falling away.
WARNING! No finger allowed here