SMALLRIG SR 4183B

Protective camera cage for Sony FX3 and FX30

The SmallRig SR 4183B is a full camera cage designed specifically for Sony FX3 and FX30 cinema cameras. It provides additional protection for the camera body while expanding the possibilities for mounting professional video accessories. The cage combines a precisely fitted U-shaped frame with a removable NATO rail, allowing users to adapt their camera configuration to different shooting requirements. Its modular design supports handheld filming, tripod operation, stabiliser use and more complex video production setups. The construction preserves access to essential camera controls and connections, making it suitable for regular professional use. With its combination of protective features, accessory mounting points and quick-release compatibility, the SR 4183B provides a practical foundation for building a versatile Sony Cinema Line camera rig.

Secure three-point mounting and camera protection

The SmallRig SR 4183B uses a three-point mounting system designed to hold the camera securely inside the cage and prevent unwanted twisting. The U-shaped frame attaches to the camera through mounting points on the bottom and sides, creating a stable connection between the camera body and the protective structure. This arrangement is particularly beneficial when using external monitors, handles, microphones and other accessories that place additional mechanical loads on the camera setup. Protective padding at contact points helps prevent scratches and abrasion during installation and everyday operation. The rigid metal construction provides additional protection against incidental contact and minor impacts. The camera-specific design maintains a compact profile around the body while providing a secure foundation for professional accessory configurations.

Modular NATO rail and compatibility with the original XLR handle

An important feature of the SmallRig SR 4183B is its modular construction with a removable upper NATO rail. The rail is secured to the cage using two 1/4"-20 screws and provides a convenient interface for compatible quick-release handles and other accessories. When the original Sony XLR top handle is required, the NATO rail can be removed to provide the necessary mounting access. This allows operators to retain the functionality of the camera's original audio handle while benefiting from the protection and additional mounting points of the cage. The modular arrangement is particularly useful for productions that alternate between compact handheld configurations and setups requiring professional audio connections. The removable rail also provides greater flexibility when integrating third-party camera accessories.

Multiple accessory mounting interfaces

The SmallRig SR 4183B incorporates a variety of mounting points for professional video production equipment. Multiple 1/4"-20 threaded holes allow users to install compatible articulating arms, mounting brackets and other accessories. ARRI-style 3/8"-16 locating holes provide secure attachment options for compatible top handles and monitor mounts while helping prevent unwanted rotation. A cold shoe mount supports equipment such as microphones, compact LED lights and wireless audio receivers. NATO mounting interfaces provide additional options for attaching compatible quick-release accessories. The cage also features a QD socket for compatible quick-detach camera straps, improving convenience during transportation. These interfaces allow users to build customised camera configurations without relying exclusively on the camera's original mounting points.

Dedicated HDMI cable clamp for reliable connections

The SR 4183B includes a dedicated HDMI cable clamp designed to secure the cable connected to the camera's HDMI port. The clamp helps reduce unwanted cable movement and mechanical stress on the connector, minimising the risk of accidental disconnection during filming. This is especially important when using external monitors, video recorders or wireless video transmission systems, where maintaining a stable signal connection is essential. The cable clamp is manufactured from a combination of polycarbonate and fibre-reinforced material, helping reduce weight while maintaining practical durability. Its construction provides a secure cable connection without adding unnecessary bulk to the camera rig. The included clamp is particularly useful for handheld shooting and production environments where the camera is frequently repositioned.

Arca-Swiss quick-release base and convenient camera access

The bottom of the SmallRig SR 4183B incorporates an Arca-Swiss-compatible quick-release plate, allowing the camera to be installed directly on compatible tripod heads and stabilisers without removing the cage. This design simplifies transitions between handheld filming, tripod-based operation and motorised stabilisation, including use with compatible DJI RS-series stabilisers. The cage is shaped to maintain access to essential camera buttons, control dials, connection ports and the battery compartment. A hinged section near the battery door follows the contour of the camera body and provides additional support for the little finger, improving handling comfort during handheld shooting. The design allows battery replacement without removing the cage, helping maintain an efficient workflow. These practical details make the SR 4183B suitable for productions that require frequent changes between different shooting platforms.

Lightweight construction, dimensions and package contents

The SmallRig SR 4183B is manufactured from aluminium alloy, stainless steel, silicone and fibre-reinforced polycarbonate components, combining structural rigidity with protective contact surfaces. Its dimensions are approximately 159.0 × 101.2 × 66.2 mm, while its weight is approximately 190 ± 5 g. The compact construction helps minimise additional bulk around the camera while providing a durable foundation for mounting accessories. The package includes one camera cage, one removable NATO rail, one HDMI cable clamp and two 1/4"-20 screws. The camera, original Sony XLR handle and additional mounting accessories are not included. Combining secure camera fixation, modular NATO compatibility, integrated Arca-Swiss mounting and dedicated cable protection, the SR 4183B provides a versatile and lightweight solution for Sony FX3 and FX30 camera systems.

• SmallRig 4183B Camera Cage for Sony FX3 / FX30 ×1
• NATO Rail ×1
• HDMI Cable Clamp ×1
• 1/4"-20 Screws ×2