The SmallRig 2999 Full Cage is a purpose-built protective rig designed specifically for the Sony Alpha 7S III mirrorless camera. Crafted from durable aluminum alloy, this formfitting cage keeps every button, dial, port, and the hot shoe fully accessible while securing your camera through an anti-twist design — an M2.5 screw fixed to the strap hole, combined with the standard 1/4″-20 camera mounting screw, keeps your A7S III completely locked in place with zero unwanted movement. Padding on the base further protects the camera body from scratches during daily handheld and rig-based shooting.

Built for real rig expansion, the cage features one integrated cold shoe mount plus multiple 1/4″-20 and ARRI-standard 3/8″-16 threaded holes throughout, letting you attach a top handle, side handle, monitor arm, or ARRI locating handle exactly where you need it. A built-in NATO rail on the left side gives you a quick-mount point for additional accessories, while dedicated strap holes accept a separately available wrist or neck strap for added security during handheld shooting.

Thoughtful touches round out the design: strap holes for camera security, mounting points on the front for a compatible lens adapter, and a built-in screwdriver at the base of the cage, so you’re never without the tool needed to tighten your camera screws mid-shoot. For A7S III shooters looking to build out a complete video production rig — handles, monitors, microphones, and lighting all included — the 2999 is the reliable starting foundation.

Key Features

• Formfitting aluminum alloy full cage designed specifically for Sony A7S III
• One integrated cold shoe mount for monitor or microphone
• Multiple 1/4″-20 & ARRI 3/8″-16 threaded mounting holes
• Built-in NATO rail (left side) for quick accessory attachment
• Anti-twist design — M2.5 strap-hole screw + 1/4″-20 mounting screw
• Padding on base protects camera from scratches
• Strap holes for wrist/neck strap attachment
• Built-in screwdriver for tightening camera screws
• Compatible with SmallRig top/side handles, cable clamps & magic arms

Product Specifications

What’s in the Box

• 1 × SmallRig 2999 Full Cage
• 1 × Built-in Screwdriver (integrated into cage base)

Why Buy from Alankar Camera Store?
Alankar Camera Store has supported photographers and videographers across India since 1976, offering only genuine SmallRig accessories with reliable warranty support. With decades of hands-on rigging and Sony cinema-camera expertise, along with dedicated WhatsApp support, we help you build a rig that fits your A7S III precisely, not a generic one-size-fits-all solution.

Frequently Asked Questions (FAQ)

• Which camera is this cage designed for? It’s built specifically for the Sony Alpha 7S III. While it may fit similar-bodied Sony models, SmallRig designed and recommends this cage specifically for the A7S III.
• Does the cage restrict access to the camera’s buttons or hot shoe? No, the formfitting design keeps all controls, ports, and the hot shoe fully accessible.
• Can I attach a top or side handle for handheld shooting? Yes, it’s compatible with SmallRig accessories like the Top Handle 1984 and Wooden Side Handle 2093.
• Does this cage include an Arca-Swiss quick-release plate? No, this standard 2999 cage does not include a built-in Arca-Swiss plate — for that feature, SmallRig offers an upgraded HawkLock version for the A7S III and related models.
• Do I need extra tools to tighten my camera in the cage? No, a screwdriver is built into the base of the cage for tightening the camera mounting screws.