The ball head holding my camera with 1.2 kilos of very good and the locking screw also attracts tight. Poorly I find the failure fuse release lever of the quick coupling unit is only a mini spring is coming and thus in no recording connected securely lost quickly, which leads to accidental touching of the release lever to fall out of the camera! Also not so good is that the quick-release system is not particularly stuck and the camera wobbles clearly what is annoying! I'm going to my 525m Cullmann Magnesite now buy a ball head without the quick release I then certainly no more problems with the quick coupling have because of not having!
Conclusion: ball head is great, also simple operation but I want to be able to rely on solid sitting and I can not for the quick coupling unit on this head!