Gitzo's Systematic tripods are modular, with a flat centre disk that can be interchanged for centre columns, levelling bases and other components. Because they have leg angle settings but no column as standard, Systematic tripods are all capable of near-groud level shooting. Leg tubes are in 6X carbon fibre with Gitzo's efficient G-locks. The GT3542XLS is an extra-long 4-section tripod that reaches overhead level when fully open. It belongs to Gitzo Series 3 - a particularly flexible and adaptable size, ideal for use with lenses up to 400mm and under loads of up to 25kg.