SMALLRIG SR 2918

Lightweight camera cage for Sony Alpha cameras

The SmallRig 2918 Light Camera Cage is a form-fitting aluminium cage designed for the Sony Alpha 7 III, Alpha 7R III and Alpha 9 mirrorless cameras. It provides additional protection for the camera body while creating mounting points for accessories used in photography and video production. The lightweight construction is suitable for handheld shooting, tripod setups and more elaborate camera rigs, allowing users to expand their equipment without significantly increasing the overall size of the camera system.

Camera compatibility and access to controls

The cage is specifically designed for the Sony Alpha 7 III, Alpha 7R III and Alpha 9. Its shaped frame follows the camera body and is designed to preserve access to the main controls, connectors and battery compartment. This makes it possible to operate the camera and change batteries without routinely removing the cage. The model-specific construction is important for a secure fit, so compatibility should be confirmed before use with other camera bodies.

Secure two-point camera attachment

The camera is secured using a standard 1/4"-20 mounting screw on the bottom and an additional M2.5 screw attached at the camera’s strap-hole position. This two-point locking arrangement helps prevent the camera from rotating or shifting inside the cage during operation. Protective contact surfaces help reduce the risk of scratches and improve the fit between the metal frame and the camera body, providing a stable foundation for accessory mounting.

Multiple mounting points for accessories

The cage includes several 1/4"-20 threaded holes, 3/8"-16 mounting points and ARRI-style locating mounts. These interfaces support compatible handles, monitor mounts, articulating arms and other camera accessories. The ARRI-style mounts help prevent compatible accessories from twisting under load, which is useful when mounting equipment that needs to remain securely positioned during handheld filming or more demanding production work.

Cold shoe and support for camera rig setups

An integrated cold shoe provides a convenient mounting point for compatible accessories such as microphones, compact LED lights and other equipment with a matching shoe foot. Additional threaded mounting points allow the cage to be configured for different shooting requirements, from a simple handheld setup to a more complete video rig. Accessory compatibility depends on the mounting interface, dimensions and weight of the equipment being attached.

Built-in screwdriver and practical handling

A screwdriver is integrated into the bottom of the cage, allowing the camera mounting screws to be tightened or loosened without needing to carry a separate tool. This is particularly useful when assembling or adjusting a camera rig on location. The cage also provides a dedicated strap slot, allowing a compatible wrist or shoulder strap to be attached while keeping the camera securely mounted within the frame.

Aluminium construction and compact dimensions

The cage is manufactured from aluminium alloy and measures approximately 143.5 × 106 × 58.5 mm. Its net weight is around 167.2 g, with a stated tolerance of ±5 g. The combination of a rigid metal frame and relatively low weight makes it suitable for portable camera configurations where accessory mounting and additional protection are needed without adding excessive bulk. The package includes one SmallRig 2918 cage; the camera, handles, monitor and other accessories are sold separately unless explicitly stated otherwise.

• SmallRig Light Camera Cage for Sony A7 III / A7R III / A9 (SR 2918)