Centre column

The main part of a tripod is the three legs, but most also have a centre column  that extends upwards still further for extra height.

Some tripods have removable centre columns and with some Gitzo tripods they are optional extras. The advantage of removable columns is that get the camera closer to the ground for low angle shots, or replace them with different types, such as short columns or geared columns.

In some cases the centre column is on a hinged mechanism so that it can be rotated and used as an angled boom for overhead shots or close-ups.