The Manfrotto 509HD is a heavy-duty fluid head suited towards work with higher-end cinema cameras like those offered from ARRI, RED, Sony, and Canon. Key features include:
Maximum static load: 29 lbs.
Maximum counterbalance load: 28 lbs.
100mm half ball
One pan bar included
29-lb. Capacity. The head is rated to hold up to 29 lbs. static weight and 28 lbs. of counterbalanced weight – perfect for 19mm studio style configurations using big cameras and big lenses.
100mm Ball Base. More support means a larger base, and 100mm allows you to get an even better balance over your rig.
Sliding Quick-Release System. The quick-release system enables more balancing options for front or back-heavy rigs. It features a secondary safety system to keep your camera secure. Both 1/4"-20 and 3/8"-16 screws are included for attaching a variety of cameras.
Spring-Loaded Counterbalance. With up to 28 lbs., the head provides -60° to +90° tilt range front to back, with continuously adjustable drag from 0 to max level.