A pan and tilt head is the most widely used type of tripod head, designed to allow the camera to be adjusted and repositioned along multiple axes of movement in a controlled, deliberate, and independently lockable manner. Unlike a ball and socket head, which allows simultaneous adjustment in all directions from a single control point, a pan and tilt head separates each axis of movement into its own dedicated control - typically a handle, lever, or locking knob - allowing each movement to be made and locked independently with a high degree of precision and repeatability.
Pan and tilt heads are available in two principal configurations distinguished by the number of independent axes of movement they provide. A two way pan and tilt head offers control over two axes - a pan movement that rotates the camera horizontally through 360 degrees around a vertical axis, allowing the photographer to sweep the camera left and right to follow action or compose a panoramic sequence, and a tilt movement that pivots the camera up and down around a horizontal axis to point the lens higher or lower. A three way pan and tilt head adds a third independent axis - typically referred to as a swing or roll control - that allows the camera to be rotated around the lens axis to switch between horizontal landscape format and vertical portrait format orientation, or to achieve any intermediate angle of camera rotation required by the composition.
The quality of a pan and tilt head is determined by several important characteristics that should be carefully evaluated before purchase. The smoothness of movement on each axis is critical, particularly for video and film work where jerky or uneven panning and tilting motions are immediately apparent in the finished footage. The finest pan and tilt heads incorporate a fluid damping mechanism - commonly referred to as a video head or fluid head - in which a viscous fluid fills the movement mechanism and provides smooth, resistance controlled motion that eliminates the jerkiness and stick-slip behaviour that can affect simpler mechanical heads, particularly at the beginning and end of a pan or tilt movement. The firmness and reliability of the locking mechanism on each axis is equally important, as a head that allows any unwanted movement or drift after locking will compromise the stability and sharpness of the images made from it. The physical size and load rating of the head must also be matched to the weight of the camera and lens combination it will be asked to support, as undersized heads may flex, drift, or fail to hold their position reliably under heavier loads.
The ball and socket head represents an alternative and popular approach to tripod head design that contrasts with the pan and tilt head in its fundamental operating principle. Rather than providing separate controls for each axis of movement, a ball head uses a single spherical bearing that can move freely in any direction simultaneously, with all axes locked by a single control - typically a large locking knob or lever. This allows very rapid repositioning of the camera in any direction with a single release and lock action, making ball heads popular among photographers who need to reframe and adjust quickly, such as in wildlife, travel, and documentary photography. However, the simultaneous control of all axes from a single lock point makes precise, single axis adjustments more difficult to achieve accurately, and the camera platform on many ball heads is smaller than that of equivalent pan and tilt heads, potentially offering less stability under heavy telephoto lenses or when working at the extremes of the head's adjustment range.