For Alpha 7 IV/A7R IV/Alpha 7 S III/Alpha 1: SmallRig Cage 3667 is designed to facilitate low angle shooting and protect the camera, while offering a variety of accessory installations. It is designed for Sony Alpha 7 IV, Alpha 7S III and Alpha 1 Two point locking: use an integrated 1/4 "- 20 screw to install 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 plate, first remove the opening ring on the left side of the camera. Note that the camera belt eyelet is occupied when using the side locking disc Full protection: aviation aluminum and formwork design, safe and durable. The A7 IV frame has a built-in protective pad to prevent the camera from being scratched. When a camera is installed, it has access to the camera's controls, hot boots, and functions Multiple mounting points: The cage has an integrated support, multiple 1/4 "- 20 threads and 3/8" - 16 ARRI locating holes. The side of the cage also has a built-in NATO guide rail, and it also has a separately usable neck strap or hand strap belt groove. A magnetic flat head screwdriver and an Allen wrench are stored at the bottom of the cage to fix the mounting screws Built in quick release plate: There is a built-in quick release plate at the bottom of the cage for Arca. It is designed for DJI RS 2/RSC 2/RS 3/RS 3 Pro for stabilizer firing Notes: HDMI cable clamp 3000 is incompatible with Alpha 1; To use the side lock plate, first remove the split ring on the left side of the camera Power backup solution: SmallRig NP-FZ100 camera battery charger kit is now available. Two 2040mAh (Real) rechargeable batteries and one charger can bring longer battery life for your video and photo shooting. If you need enough power, please search SmallRig-NP-FZ100-Battery 3824