(New Version) SmallRig 2203B Cage for Blackmagic Pocket Cinema Camera 4K & 6K with Anti-twist Mechanism
Product description
At a glance
If you’ve got a Blackmagic Pocket Cinema Camera 4K or 6K, this SmallRig 2203B cage is aimed at making the camera easier to rig without covering up what you actually need to reach. On paper, the big job here is simple: give you mounting points, battery/SD access, and extra physical security so the camera sits in your setup confidently.
What matters in day-to-day use is that the cage is designed around the BMPCC layout. The description specifically notes that it doesn’t block any camera buttons, and that you can get to both the battery and the SD card slot. That’s the sort of detail that saves you time when you’re doing quick changes on set, at home, or while travelling.
Key features and what you’ll notice
The cage uses a firm attachment method with 2 screws at the top and bottom. There’s also an anti-twist approach: two removable small pins are included to help prevent twisting. It’s a practical add-on because camera cages can feel a bit “free” if the mounting isn’t sorted properly—so removing twist play is one of those small things that can make the whole rig feel more solid.
You also get rubber pads on the bottom. That’s a straightforward protection detail: it should help reduce scratch risk where the cage contacts the camera body.
Then there’s the way it’s set up for adding accessories. The cage includes multiple mounting points, including 1/4 inch and 3/8 inch threaded holes, a cold shoe, and 3/8 inch positioning holes aligned with the ARRI standard. In practical terms, that means you can build up a more complete kit—think microphone mounting, or adding support pieces—without having to improvise.
An integrated NATO rail is another convenience feature. If you’re swapping accessories during shoots, NATO-style clamps tend to make that quicker than fiddling with individual mounts.
Compatibility, access, and mounting points
This cage is described as compatible with Blackmagic Design Pocket Cinema Camera 4K and 6K (the BMPCC 4K/6K). It also mentions compatibility with DJI Ronin S and Zhiyun Crane 2 gimbals.
If you’re using gimbal stabilisers, cages live or die by two things: weight distribution and how safely the camera locks in. Here, the anti-twist mechanism and the secure screw attachment are clearly part of that story.
Also, because it doesn’t block buttons and keeps battery/SD card access available, it’s less likely to turn into an annoying “remove the cage to operate” situation. Depending on how you like to work, that can be the difference between sticking with a cage setup or constantly detouring around it.
One limitation to keep in mind: the description doesn’t spell out every specific accessory brand or every exact third-party compatibility point. It’s built with standard thread sizes and ARRI-positioning holes in mind, but if you already own unusual mounting hardware, it’s worth checking that your pieces line up with the listed interfaces.
Pros and cons in real buying terms
What stands out - Designed for BMPCC 4K and 6K with access to battery and SD card slot noted in the description - Anti-twist mechanism (two removable pins) plus top/bottom screw attachment for a more secure feel - Multiple mounting options (1/4 inch, 3/8 inch, cold shoe, ARRI-style holes) and an integrated NATO rail - Rubber pads to help protect the camera body from scratches
Where it may not be ideal - If you only need the absolute minimum rigging (no accessories, no rails, no extra mounting), a cage like this can be more “system build” than you need - If your accessory ecosystem relies on non-standard interfaces, you may still have to adapt—even with the standard thread holes and NATO rail
Who it suits (and who should look elsewhere)
It makes sense if you’re building a practical rig for the BMPCC 4K/6K: adding audio support, mounting a handle for manual shooting, or attaching accessories that benefit from repeated removal and re-clamping.
It’s also a solid choice if you plan to move between handheld shooting and stabiliser use, since the description specifically calls out Ronin S and Crane 2 compatibility.
It might not suit you as well if you want something lighter and simpler, or if your shooting style never requires external mounts—because this cage is about expanding capability, not just basic protection.
Everyday use example
Imagine you’re on a small interview setup: you clip an accessory onto the cold shoe or attach a microphone using one of the threaded interfaces, then use the NATO rail for a quicker swap of a support piece. When it’s time to roll again, the stated access to the SD card slot and battery means you’re not forced into taking the entire cage apart just to continue.
Tech specs
- Type: Camera cage
- Compatibility: Blackmagic Pocket Cinema Camera 4K, Blackmagic Pocket Cinema Camera 6K
- Model: 2203B (New Version)
- Anti-twist mechanism: removable pins to help prevent twisting
- Attachment method: 2 screws at the top and bottom
- Mounting interfaces mentioned: 1/4 inch and 3/8 inch threaded holes, cold shoe, 3/8 inch positioning holes (ARRI standard)
- Rail: integrated NATO rail
- Gimbal stabiliser compatibility mentioned: DJI Ronin S, Zhiyun Crane 2
What to check before you buy
Because cage fit is only useful if it matches your way of rigging, it’s worth double-checking: - That your BMPCC is 4K or 6K (the cage is explicitly designed for those) - That your key accessories mount using the listed interfaces (1/4 inch, 3/8 inch, cold shoe, NATO rail) - Whether your stabiliser setup expects a cage with the sort of anti-twist and screw locking described
If you already own specific accessories, it’s sensible to look at their mounting method and confirm it lines up with the cage’s thread sizes and rail type—rather than assuming everything will “just fit”.
Buying verdict
It’s worth considering if you want a BMPCC 4K/6K cage that keeps button use clear, maintains battery/SD access, and adds a practical set of mounting points (including an integrated NATO rail) with an anti-twist mechanism for stability.
You may want to skip it if your rigging needs are minimal, or if your existing accessories rely on compatibility that isn’t covered by the standard thread sizes, cold shoe, ARRI-style positioning holes, and NATO rail.
Mini FAQ
Is this cage meant for BMPCC 4K and 6K only?
The description states it has been developed for the Blackmagic Design Pocket Cinema Camera 4K and 6K, so it’s not positioned as a universal cage.
Will I still be able to use the camera buttons?
On the face of it, yes—this cage is described as not blocking any buttons on the camera.
Can I access the battery and SD card without removing the cage?
The description specifically says you can access both the battery and the SD card slot.
Does it help prevent the camera twisting in the cage?
Yes. It includes two removable pins intended to prevent twisting, alongside top and bottom screw attachment.
Does it work with stabilisers like Ronin S or Crane 2?
The description mentions compatibility with DJI Ronin S and Zhiyun Crane 2.