SkipD wrote in post #11551378
The fellow doing that video does not understand the facts.
If you snug the three setscrews up against a mounted head, the connection will stay tighter for a longer period of time.
In addition, if the bottom of the head and/or the top of the tripod center column are not perfectly flat (so that they mate perfectly), there will possibly be a little wobble. The tightened setscrews eliminate that potential problem.
thanks i appreciate a lot your help
may i ask the last question?
The 498 has three knobs - one that controls the movement of the ball, one that controls the tension and one that controls the panning (which will be discussed next) as opposed to the two knobs that come with the 496 (no panning knob). The knob that releases the ball can really tighten down and offers an incredible amount of support. One thing that I found interesting was that the tension knob alone was able to keep the camera in place. With both of these knobs tied down, you will be able to keep your camera in any position for extended periods of time without having to worry about movement.
witht knob (that contrls the movent of the ball) released ,can the head rotate/turn (pan) ?
or should i use always the panning knob to rotate the head?