Does what he should. The currently most severe tested equipment (Nikon D7000 + 55/300 lens + flash) holds absolutely. A sagging after fixing I could not recognize consciously or striking / disturbing. Had not when I tentatively assembled an approximately weighing 3.5 kg spotting scope with 25x magnification for lunar observation. The Sirui was mounted for this purpose on an astronomical mount (with automatic Nachfüuhrung the hour axis). The set screws (ball and fixation of removable disk) are very pleasant to use. No "hard bangs" required. Very pleasant to secure the release plate is slipping out from accidental. The D7000 (also tried with a D5000) can be screwed well on the removable disk. The camera is fixed, even in vertical shooting on the removable disk. The camera is lowered by only on initial pivot to portrait mode until each untenleigende locks the release plate is supported on the edge of the camera base / back wall. But does not bother me (who already swings constantly in portrait orientation of trigger up to trigger down back and forth?). A breakaway torque is then felt when loosening the locking screw only so far that the camera is straight yet. Then "runs" the ball but choppy. But since I have no comparison to other products I can not judge that. I loosen the set screw while I am the camera with the other hand holding to such an extent until the camera is very easy to move, choose picture, tighten, done. Since I run any macro photography for me enough. That reminds me of the adapter spotting - Camera is missing, I could not test the intended use. But emotionally are no negative surprises expected. Met expectations, great masiver Kukgelkopf.
