1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your SmallRig Cage 4785, designed specifically for the Blackmagic Design Cinema 6K camera. Please read this manual thoroughly before using the product to ensure proper function and longevity.
2. Package Contents
Verify that all items listed below are included in your package:
- Cage x 1
- Lens Mount Adapter Support x 1
- M5 Screw x 2

Image: Contents of the SmallRig Cage 4785 package, showing the camera cage, lens mount adapter support, and two M5 screws.
3. Features
- Full/Half Cage 2-in-1 Design: The cage can be configured as a full cage or disassembled into a half cage, offering flexibility for various setups, including stabilizer use.
- Integrated Lens Mount Converter Support: Includes support compatible with lens mount converters such as Sigma MC-31 / MC-21, preventing strain and damage to the camera's lens mount.
- Three-Point Camera Locking: Secures the camera at three points (two 1/4"-20 screws at the bottom and one 1/4"-20 screw at the top) to ensure stability and prevent deflection. A built-in hex wrench is provided for convenient assembly and disassembly.
- Anti-Scratch Protection: Features built-in silicone gaskets at multiple contact points to protect the camera body from scratches.
- Unobstructed Access: Designed to maintain full access to all camera buttons, card slots, screen, battery compartment, and other interfaces.
- Multiple Mounting Points: Equipped with various mounting options including 1/4"-20 and 3/8"-16 threaded holes, ARRI positioning holes, NATO rails, cold shoe mounts, and QD interfaces for attaching a wide range of accessories. Two horizontal 1/4"-20 holes on the hand grip facilitate stable vertical shooting.

Image: Overview of the SmallRig Cage 4785, highlighting various mounting points including strap slots, 1/4"-20 and 3/8"-16 threaded holes, NATO rail, cold shoe mount, QD socket, and hex wrench location.
4. Setup and Installation
4.1 Attaching the Camera to the Cage
- Align the camera with the bottom plate of the cage.
- Secure the camera to the cage using the two 1/4"-20 screws at the bottom. Tighten them with the built-in hex wrench.
- Attach the top 1/4"-20 screw to the camera's top mounting point for a secure three-point lock.

Image: Illustration of the three-point locking system, demonstrating how the camera is secured to the cage using bottom and top screws for enhanced stability.
4.2 Converting Between Full and Half Cage
The cage can be converted by removing or installing four screws on the cage body. This allows for a lighter setup when a full cage is not required, such as when balancing on a stabilizer.

Image: Visual guide demonstrating the conversion of the cage from a full configuration to a half cage by removing specific screws. Note: The Allen wrench for screw removal is not included.
4.3 Installing the Lens Mount Converter Support
The included support is designed to work with lens mount converters like Sigma MC-31 or MC-21. Attach it to the cage to provide additional support for the lens and prevent stress on the camera's mount.

Image: The camera cage with a lens mount converter support, illustrating its compatibility with Sigma MC-31 and MC-21 converters to protect the camera body mount.
4.4 Attaching Accessories
Utilize the various mounting points on the cage to attach accessories such as handles, microphones, video lights, and SSD mounts. Refer to the specific accessory's manual for its installation instructions.
Video: A demonstration of the SmallRig Camera Cage for BMCC 6K in various shooting scenarios, showcasing its versatility and how different accessories can be integrated for professional video production.
5. Operating Instructions
Once the camera is securely mounted within the SmallRig Cage 4785 and necessary accessories are attached, the system is ready for operation. The cage enhances the camera's functionality by providing stable mounting points for various shooting styles.
- Handheld Shooting: Attach a top handle or side handle to the cage for comfortable and stable handheld operation.
- Tripod Shooting: The cage's bottom plate features standard mounting threads for direct attachment to tripods or quick release plates.
- Stabilizer Shooting: When using a stabilizer, consider converting the cage to its half-cage configuration to reduce weight and improve balance.
- Vertical Shooting: Utilize the two horizontal 1/4"-20 holes on the hand grip area for secure vertical camera mounting.

Image: The SmallRig Cage 4785 configured for different shooting scenarios: handheld, tripod, and stabilizer, demonstrating its adaptability.
6. Maintenance
To ensure the longevity and optimal performance of your SmallRig Cage 4785, follow these maintenance guidelines:
- Cleaning: Wipe the cage with a soft, dry cloth to remove dust and debris. For stubborn dirt, use a slightly damp cloth and then dry thoroughly. Avoid harsh chemicals or abrasive materials.
- Screw Inspection: Periodically check all screws, especially those securing the camera and any attached accessories, to ensure they are tight. Re-tighten as necessary.
- Silicone Gaskets: Inspect the silicone gaskets for any signs of wear or damage. These gaskets are crucial for protecting your camera from scratches.
- Storage: Store the cage in a clean, dry environment when not in use.
7. Troubleshooting
If you encounter any issues with your SmallRig Cage 4785, refer to the following common problems and solutions:
- Camera feels loose in the cage: Ensure all three locking screws (two bottom, one top) are properly tightened. Check that the camera is correctly seated within the cage.
- Scratches on camera body: Verify that the silicone gaskets are correctly positioned and intact. If damaged, contact support for replacement parts.
- Accessories not fitting securely: Ensure you are using the correct type of screw or mounting mechanism for the specific mounting point (e.g., 1/4"-20, 3/8"-16, ARRI positioning pins, NATO clamp).
- Difficulty converting to half cage: Ensure the correct four screws are identified and loosened/removed. Do not force components.
8. Specifications
| Specification | Detail |
|---|---|
| Model ID | 4785 |
| Compatible Devices | Blackmagic Design Cinema 6K |
| Product Dimensions | 5.58"D x 4.57"W x 5.58"H (141.8 x 116.2 x 141.8 mm) |
| Item Weight | 381.2 Grams (13.4 oz) |
| Material(s) | Aluminum Alloy, Stainless Steel |
| Maximum Weight Recommendation | 2 Kilograms |
| Color | Black |
9. Warranty and Support
9.1 Warranty Information
The SmallRig Cage 4785 comes with a 2-year warranty from the date of purchase. This warranty covers manufacturing defects and material flaws under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or improper maintenance.
9.2 Customer Support
For technical assistance, warranty claims, or any other inquiries, please contact SmallRig customer support through their official website or the retailer where the product was purchased. Please have your product model number (4785) and proof of purchase ready when contacting support.