Alta Pro tripods have unmatched stability and flexibility, enabling more angle possibilities than ever before. Its innovative Multi-Angle Central Column (MACC) System allows users to move the central column from zero to 180-degree angles in variable vertical and horizontal positions making macro-photography and special wide-angle shots a breeze. The Instant Swivel Stop-n-Lock (ISSL) System securely repositions the central column in one simple movement, in just a few seconds, while maintaining the tripods stability. Other features include advanced camera vibration and shock control, legs that adjust to 25, 50 and 80-degree angles, quarter-twist leg locks, patented premium magnesium die-cast canopy and head, hexagon-shaped central column for extra stability, and non-slip, spiked rubber feet for changing terrains. Alta Pro 283CT is carbon fiber and has quarter-twist leg locks.