SMALLRIG SR 3667

Full Camera Cage for Sony Alpha Cameras

The SmallRig SR 3667 is a full camera cage designed to protect compatible Sony Alpha cameras while providing a versatile platform for mounting accessories. It is intended for video production and photography workflows that require additional mounting points for monitors, microphones, lights and camera handles. The cage combines a lightweight metal structure with a camera-specific fit, helping expand the camera setup without unnecessarily restricting access to its main controls and interfaces.

Protective Aluminium-Alloy Construction

The cage is constructed from aluminium alloy, stainless steel and silicone components. Its rigid frame helps protect the camera body from everyday contact and minor impacts during filming, transport and equipment changes. Protective padding between the cage and camera helps reduce the risk of scratches, while the fitted design maintains access to the camera’s buttons, dials, ports and battery compartment.

Secure Two-Point Locking System

The SR 3667 uses a bottom 1/4"-20 screw and additional side-locking components to secure the camera inside the cage. This arrangement helps minimise unwanted movement between the camera body and the frame, providing a stable foundation when accessories are attached. The locking system is designed to maintain a secure fit while allowing the camera to be removed when the cage is no longer needed.

Integrated Arca-Type Quick-Release Plate

An Arca-type quick-release plate is built into the bottom of the cage, allowing compatible tripod heads and mounting systems to be used without adding a separate plate. The design also supports compatible DJI RS 2 and RSC 2 stabiliser configurations, helping simplify transitions between handheld shooting, tripod use and stabilised video recording. Compatibility depends on the specific mounting interface and stabiliser setup.

Accessory Mounting and Expansion

The cage provides multiple 1/4"-20 threaded holes, ARRI-style 3/8"-16 locating holes and cold shoe mounts for compatible accessories. These attachment points can accommodate equipment such as top handles, side handles, monitor mounts, microphones and LED lights. Additional mounting holes on the sides and bottom support compatible hand or shoulder straps, allowing the camera rig to be adapted to different shooting styles.

Practical Handling and Cable Protection Options

The cage includes a shaped section near the battery compartment that follows the camera’s contour and leaves space for the little finger, helping improve handling during handheld operation. A magnetic tool is integrated into the cage to simplify installation and removal. An optional SmallRig HDMI Cable Clamp 3000 can be used with supported camera models to reduce strain on the HDMI connection and help maintain a stable cable connection during recording.

Compatibility and Technical Specifications

The SmallRig SR 3667 is designed for selected Sony Alpha cameras, including the Alpha 7 IV, Alpha 7S III and Alpha 1. The original version measures approximately 146 × 107.6 × 64.5 mm and weighs around 180 g, with minor variation possible between production batches. The package includes one camera cage and two locking side plates. Check the exact camera compatibility and cage version before purchase, as related models and newer revisions may have different mounting features.

• SmallRig Full Camera Cage for Sony Alpha 7 IV / Alpha 7R V / Alpha 7S III / Alpha 1 / Alpha 7R IV (SR 3667)
• Locking Side Plates × 2