Use the integrated 1/4"-20 screws to mount the camera on the A7 IV rack and use two side locking plates (one for Sony Alpha7S III/Alpha 1 and one for Alpha 7 IV) to prevent distortion. To use the side locking panel, first remove the cotter ring on the left side of the camera. Pay attention to the full protection of the camera belt eyelets when using the side lock disc: aviation aluminum and stencil design, safe and durable. The A7 IV frame has built-in protective pads to prevent the camera from being scratched. Once the camera is attached, multiple mounting points can be used using the camera's controls, hot shoe and features: the cage has integrated brackets, multiple 1/4"-20 threads, and 3/8"-16 ARRI positioning holes. NATO rails are also built into the sides of the cage, and there is also a separately usable neck strap or hand strap with a groove. The bottom of the cage stores a magnetic flathead screwdriver and Allen key for securing the mounting screws with built-in quick-release plate: There is a built-in quick-release plate at the bottom of the cage for Arca. Designed for DJI RS 2/RSC 2/RS 3/RS 3 Pro for stabilizer ignition Note: ? HDMI cable clip 3000 is not compatible with Alpha 1; ? To use the side lock panel, first remove the split ring power backup on the left side of the camera