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There are two basic types of tripod heads: ball heads and pan-tilt heads. Ball heads usually have two or three controls. The main control loosens the ball, allowing the photographer to move the camera in any direction. Another control the head may have will loosen only the panning base.What is a fluid camera head?
A system in a fluid head that allows your camera to remain at the angle you leave it set to within its range. 2. Fluid Drag. That grease or oil material, that is trapped between those plates within a sealed pack, act as torque dampers instead of using friction to create that drag.What is fluid in the head?
The brain and spinal cord are surrounded by a clear fluid called cerebrospinal fluid (CSF). This fluid is produced and stored in cavities in the brain called ventricles. It circulates around the brain, moving from ventricle to ventricle.