The PH-10 Carbon Fiber Gimbal Head from Sirui is a great solution to the problem of shooting moving subjects with a long telephoto lens. Ball heads and 3-way heads can be cumbersome in fast-moving situations, but the gimbal head make a camera and heavy lens seemingly weightless and offers smooth and precise tracking for fast-moving subjects, like when shooting sports or wildlife. The 8x multi-layer carbon fiber and aluminum alloy construction on the L-bracket gives the PH-10 a load capacity of 33 lb while weighing only 2.2 lb. Carbon fiber also reduces vibrations and provides better tolerance for temperature changes. The included Arca-type quick release place features an anti-twist lip to prevent unwanted movement and includes a 1/4"-20 and 3/8"-16 camera screw.