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Secure and Accessorize Your Sony a7S III

SmallRig's Master Cage Kit for Sony a7S III is the perfect way to protect and add accessories to your camera. The kit includes a 2999 camera cage, a quick-release top handle, a slim NATO rail, and an HDMI cable clamp. The cage maintains access to camera controls and ports and features a shoe mount, multiple 1/4"-20 and 3/8"-16 accessory mounting threads, and slots for wrist or shoulder straps.

SmallRig Camera Cage for Sony a7S III

The lightweight Camera Cage from SmallRig provides accessory mounting and protection for your a7S III mirrorless camera. The camera mounts onto this formfitting aluminium cage with an integrated 1/4"-20 screw, and it incorporates an anti-twist design with padding on the base to protect the camera from scratching. It maintains access to the camera's controls and hot shoe, and it features a variety of mounting options.

In addition to one integrated shoe mount and multiple 1/4"-20 and 3/8"-16 accessory threads, the cage features ARRI-style accessory threads for preventing accessories from twisting when mounted on the cage. The cage also features a NATO rail on the side and mounting threads on the front for a separately available lens adapter. An Allen wrench stores on the bottom via a magnet for tightening the camera screw.


Sony a7S III mirrorless camera

SmallRig NATO Top Handle with 15mm Rod Clamp

The cheese-style NATO Top Handle from SmallRig mounts easily onto a standard NATO rail on your camera cage or rig to facilitate a low-angle shot and provide multiple accessory mounts. In addition to one 15mm rod clamp, this handle incorporates three shoe mounts, four ARRI-style anti-twist threads, and multiple 1/4"-20 and 3/8"-16 threads.

The top handle is made from aluminium and stainless steel and can slide side to side to help balance your camera rig. An Allen wrench for tightening the thumbscrew is included and can be stored in the handle.


Camera rigs and cages with a standard NATO rail

Also compatible with but not limited to:

  • SmallRig Monitor Mount 2294
  • SmallRig Monitor Mount 2348
  • SmallRig Cold Shoe Monitor Mount 2346

SmallRig HDMI Cable Clamp for Sony a7S III Camera Cage

Protect and secure the HDMI cable on your Sony a7S III camera with this HDMI Cable Clamp from SmallRig. The durable aluminium clamp is compatible with the SmallRig 2999 cage for the Sony a7S III camera.

The clamp is designed to prevent the HDMI cable from pulling or accidentally disconnecting. It mounts onto the side of the cage using one 1/4"-20 screw, which is secured with two anti-twist pins to prevent twisting. The cables are secured with an easy-grasp, knurled 1/4"-20 screw. The screw adjusts a sliding block that can be tightened to accommodate different cable diameters. An Allen wrench is included to secure the mounting screw.

Cage Compatibility

SmallRig 2999 cage for the Sony a7S III

Support Type Cage
Camera Compatibility Sony a7S III
Accessory Mounting Multiple x 1/4"-20 Female Thread, Multiple x 3/8"-16 Female Thread, Multiple x ARRI Anti-Twist 3/8"-16 Female Thread
Camera Mounting 1/4"-20 Male Screw
Tripod Mounting Cage: 1/4"-20 Female Thread, 3/8"-16 Female Thread
Shoe Mounting Cage, Top: 1 x Cold Shoe
Rail Mounting Cage, Side: 1 x NATO Rail
Materials Aluminium
Dimensions 10.65 x 14.55 x 6.4 cm
Weight 0.22 kg
Item Type Topside Handle
Attachment Method Attaches via Rail Clamp
Rod Standard 15 mm Single Rod
Rod Ports 1 x 15 mm Rod Port
Accessory Mounting Handle Shaft
Multiple x 1/4"-20 Thread
Multiple x 3/8"-16 Thread
3 x ARRI Anti-Twist 3/8"-16 Thread
Handle End
1 x ARRI Anti-Twist 3/8"-16 Thread
Shoe Mounting 3 x Built-In Cold Shoe Slot
Rail Mounting 1 x NATO Rail Clamp
Materials Aluminium, Steel
Dimensions 13.4 x 6.9 x 2.45 cm
Weight 0.18 kg
Material of Construction Aluminium
Mounting Screw 1 x 1/4"-20 Screw
2 x Anti-Twist Pins
Cable Support 1 x 1/4"-20 Knurled Thumbscrew
Dimensions 3.8 x 3.1 x 2.95 cm
Weight 0.034 kg

* Specifications subject to change by the manufacturer without notice

  • SmallRig Camera Cage for Sony a7S III
  • Allen Wrench
  • SmallRig NATO Top Handle with 15mm Rod Clamp
  • SmallRig HDMI Cable Clamp for Sony a7S III Camera Cage
  • 1/4"-20 Knurled Thumbscrew
  • 1/4"-20 Mounting Screw

Manufacturer Warranty

This product comes with a

from SmallRig Australia

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* Dispatch timeframes are indications only and may vary for multiple quantities. Timeframes are updated regularly during normal business hours.