Scaled for professional equipment, medium format and DSLRs with 200mm lens up to 400mm maximum, Series 3 Aluminum tripods combines high maximum load capacity with outstanding torsional rigidity. This model is surprisingly lighter than previous versions and offer additional stability thanks to G-lock system. All this makes it a popular alternative to series 2 tripods. All Series 3 Aluminum tripods now feature a third leg spread to go very low to the ground and take full advantage of the Ground Level Set. They are also provided with the Power Disc for an safer head lock.Features: Groud level set- This feature allows you to remove the center column to save weight and get the camera closer to the ground. Uses existing components: the upper disc with reversible 1/4 - 3/8 bolt and the column hook assembly: Remove column and fix the disk directly to the upper casting using the column hook. No tools needed.Rapid column - The center column locking collar above the tripod shoulder makes it easier to adjust the column quickly. Series 1 and above are built with an anti-rotation grooved center column for improved stability.3 positions leg angle - This feature allows you to position independently the tripod legs in three positions. G-lock - G-Lock is the Gitzo leg locking system. The locking mechanism has been completely redesigned in order to achieve a 20% increase in rigidity, faster operation and stronger, safer locking. G-Lock's special design also provides a "gravity lock" effect: the higher the load applied vertically to the leg, the stronger the lock.Reversible column - The rapid column can easily be inverted for an alternative shooting angle or low level macro work.