The device lights up perfectly from my P-TTL.
It does not matter if you sprinkle on a wall or an external diffuser set is capable of.
Without all of course also works very well.
The rotation is easy, but offers enough resistance that you are not afraid it might rattle.
The operation with the touch screen is intuitive and easy.
It responds very well to contact and does not remain lit for too long.
The AF assist lamp funktiuoniert very good and the sharpness is found very quickly.
In almost total darkness, when you do not know what everything in the viewfinder and whether is sharp, the focus has been very good with the auxiliary light will automatically hit.
The processing is very valuable.
The aforementioned battery compartment has a mark, namely red insulating rings on the floor of the compartment.
And then minus the springs and the pins of the batteries (+) into the rings.
Mir fiels easy, but this is not in general convention, which is why I can understand the confusion of many users.
Service: Have advance requested because of compatibility in Metz and get a detailed information within 24 friendly.
Conclusion: strong buy recommendation for a very good product
Since the originals can not be better.