This Series 4 carbon 4-section long Gitzo Systematic tripod is popular for its balance between closed length and sufficient height even without a column. Systematic is the choice of professional photographers who use long lenses and heavy cameras. Not only are Systematic Gitzo' s strongest and most stable tripods, they're also modular, with a top casting element that opens and closes to allow each tripod to be configured with a flat disk, geared or sliding center column, video half-ball adaptor, leveling base or other Systematic accessories. The latest range features Carbon eXact tubes, new ultra-stable feet and the Easy Link attachment, making the Systematic even more stable, versatile, and ergonomic. An Easy Link attachment (3/8'' thread) allows the user to attach various accessories.