The 468MGRC5 incorporates the same "world first" hydraulic ball-locking system as the 468MG, and uses a short sliding "video" camera plate to allow some front-back or side-to-side adjustment of the camera's position above the head, which ensures that the load of the camera and lens is balanced above the tripod's center of gravity for more secure usage (For even bigger lenses or off-center loads, the 468MGRC3 model has a longer sliding plate for more freedomof positioning). Using hydraulics instead of a mechanical system produces a super-tight lock froma minimal turn of the locking knob, without sacrificing the smoothness of the ball's movement when unblocked. The 468MGRC5 is designed to meet the demands of professional photographers who require a light weight head but at the same time being able to support heavy camera loads up to 26.5lbs! The 468MGRC5 borrows the popular features found on Manfrotto's standard range of ball heads - such as independent pan and tilt locks with a 360° pan movement and +90° / -90° tilt movement. To keep weight low, the head is made of magnesium; and to provide smooth movements, the 2" aluminum ball is PTFE coated. The oversized ball locking knob allows for easy control even when using gloves.