Tripods essentially come in two parts: the tripod legs, used for support and height, and the tripod head, which is used for positioning and pointing the camera. Often, a tripod is sold with a head as a single item, but with more upmarket tripods the legs and head are usually sold separately so that you […]
Pan axis (tripods)
On a tripod head, the pan axis is the one that allows horizontal movement only, so you're turning the camera to face a different way without altering its angle of tilt. All three way heads have a separate pan axis, and some ball heads too.