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Sony a7s III SmallRig Cage Kit with Accessories

A budget-friendly cage for the new Sony a7s3

Smallrig sony a7siii cage
Images by SmallRig

The new Sony a7s III SmallRig Cage Kit is one of the most popular and versatile budget options for new owners. And with plenty of accessories such as top and side handle, you can configure it to suit your needs. As with any mirrorless/hybrid camera a cage is most often the starting point in the “rigging” process. 

Of course, it all depends on your style of filming, however for most corporate video productions, events, or weddings, a cage is the way to go.  

Alternative Gear: 8Sinn Cage for a7s III – Read all about it here!

SmallRig Master Kit Cage for Sony A7sIII

Earlier in the Summer, SmallRig announced the Master Kit for Alpha 7S III shortly after the camera’s announcement. And in early September they started shipping the cage and accessories. 

Getting your accessories ordered early is imperative, as the Sony a7s III is already shipping in North America.

Available as a stand-alone cage or in a Master Kit including a full cage, NATO rail, a Top handle and a HDMI cable clamp, SmallRig has your rigging needs covered. 

Get the SmallRig A7s III Cage on Amazon

Smallrig sony a7siii a7s3 cage details
Images by SmallRig

Getting Your Alpha7s III Production Ready with NATO Compatible Accessories

The new SmallRig Master Kit (part number 3009) comes with a form-fitting aluminium full cage, an HDMI cable clamp, a thin NATO rail and a quick release NATO top handle. Furthermore, the cage comes with plenty of 1/4-20 and 3/8″-16 mounting threads, a NATO rail, a cold shoe mount and ARRI-style mounts for accessories.

Moreover, the included HDMI clamp attaches to the side of the cage using a 1/4″-20 screw and two anti-twist pins, which prevents the camera’s HDMI cable from accidentally disconnecting.

And for those planning on using an external monitor or recorder such as the Atomos Ninja V there is a NATO rail for a top handle. The NATO Rails itself attaches to the top of the cage using a couple of 1/4″-20 screws. One optional accessory that is very handy is the Swivel/Tilt monitor mount, which costs a bit extra, but from what I hear it’s totally worth it. 

Smallrig sony a7siii top handle nato
A7s III Master Kit by SmallRig

Price and Availability

The SmallRig Master Kit for A7s III is priced at $125 USD. In addition, various accessories are moderately priced between $14 and $129. Such include a wooden handle, cold-shoe mounts, Swivel/Tilt monitor mount, and more.

Master Kit by SmallRig for A7s III includes:

  • 1 x Cage
  • 1 x HDMI Clamp
  • 1 x NATO Rail
  • 1 x Handle
  • 2 x 1/4 Screw
  • 1 x Allen Wrench


  • Dimensions: 145.5 x 181.5 x 134mm
  • Net Weight: 445g
  • Construction Material: Aluminium Alloy 

Available to order from B&H Photo here

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