Conclusion: High-functional and very well priced even better.
1. Operate the clamping lever to about 45 ° shall release tripod plate, the lever springs back again. Advantage of the lever is now off and hardly accidental snagging is reduced.
Operating the lever to about 90 ° effects a latching of the lever, the lever is now clearly to the outside. When you insert the tripod plate (with camera) engages the lever automatically and clamps the tripod plate safely in tripod head. Very convenient as possible Handed.
2. The clamping lever is selectively lockable against accidental opening. For this must be brought to the a clear resistance in the appropriate position below lying locking pin.
3. The tripod plate can be caused by lodging its shape only in a single position on the tripod head and lock. So When mounting the tripod plate in the camera is used to define whether you down or up the option for Portrait or the option for tilt forward. You can switch between the two options is only possible if the tripod plate is detached from the camera rotated 90 °, re-tightened and is inserted into the tripod head. This limits the flexibility of a little and would not be a balanced tripod plate.