SmallRig Cage for Sony A7R IV – Full Camera Protection and Accessory Mounting Solution
The SmallRig Cage for Sony A7R IV is a precision-engineered full cage designed to protect the camera body while expanding rigging options for professional videographers and content creators. Made from durable aluminum alloy with stainless steel reinforcements and silicone padding, it offers a snug fit that securely locks the camera while maintaining full access to buttons, dials, and ports. This cage is ideal for building a versatile camera rig that supports a wide range of accessories necessary for modern filmmaking and photography workflows.
Design and Build Quality
Form-Fitting Protection
The cage secures the Sony A7R IV using a three-point locking system consisting of a 1/4"-20 locating pin and screw at the base and an M2.5 screw on the side. This triple locking prevents twisting or movement, ensuring the camera remains stable during handheld work or when mounted on rigs. Inside, silicone padding prevents scratches and cushions the camera from minor impacts.
Lightweight yet Durable Construction
Weighing approximately 180g, the cage is constructed of high-quality aluminum alloy combined with stainless steel hardware. Silicone inserts protect the camera and add grip comfort. Despite its rugged build, the cage is designed to remain lightweight, preserving the camera’s portability.
Comprehensive Mounting Options
Multiple Threaded Holes
SmallRig incorporates numerous 1/4″-20 and 3/8″-16 threaded holes throughout the cage’s top, sides, and bottom surfaces. These universal mounting points allow attachments such as LED lights, microphones, wireless audio transmitters, monitor arms, and magic arms to be securely added to the rig. This flexibility enables users to build customized setups suited to their shooting style.
ARRI-Style Mounting Holes
The cage also features several ARRI-style anti-twist locating holes that help lock accessories in place, ensuring no rotation or loosening during prolonged shoots or vigorous movement, increasing the overall system reliability.
NATO Rail and Cold Shoe Mount
Integrated NATO rails provide quick-release functionality for compatible handles and accessories, while a built-in cold shoe mount allows direct attachment of flash units, wireless receivers, or small LED lights. Several user-friendly accessory locations ensure a modular, ergonomic setup.
HDMI Cable Clamp Compatibility
To protect the camera’s fragile HDMI port and cable during video capture or live streaming, the cage supports SmallRig’s optional HDMI Cable Clamp. This clamp securely fastens the cable with a thumbscrew and anti-twist pins, preventing accidental disconnections and signal loss.
Ergonomics and Usability
A hinged arm adjacent to the battery door mimics the camera’s curved profile, improving handheld stability and grip comfort. This design also allows quick battery swaps without needing to remove the cage, saving valuable production time. The cage maintains open access to all operational controls including ports, buttons, dials, battery door, memory card slots, and the hot shoe.
Compatibility
Designed specifically for the Sony Alpha 7R IV, this cage also has compatibility overlap with the Sony Alpha 7R V, Alpha 7 IV, Alpha 7S III, and Alpha 1 models, although some features or side locks may differ per model.
Dimensions and Weight
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Dimensions: 146 x 107.6 x 64.5 mm
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Weight: About 180 grams
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Material: Aluminum alloy with stainless steel and silicone pads
Enhanced Functionality with SmallRig Accessories
The cage is compatible with a wide ecosystem of SmallRig accessories, such as:
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Side handles and top handles with NATO mounts for improved handheld support
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Monitor mount arms for external displays
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Magic arms for flexible accessory placement
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Follow focus mounts and lens supports
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HDMI cable clamp for reliable cable management
Use Cases
This cage is ideal for:
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Videographers requiring a full protective rig for Sony A7R IV body
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Run-and-gun shooters needing compact, rugged camera protection
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Professionals mounting multiple accessories in diverse shooting scenarios
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Photographers seeking added durability for prolonged studio or field use
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Hybrid shooters who require stability when transitioning between handheld and gimbal setups
Package Contents
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1 x SmallRig Full Camera Cage for Sony Alpha 7R IV
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1 x 1/4”-20 Locating Pin and Screw
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1 x M2.5 Side Screw
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1 x Built-in Magnetic Spanner for assembly
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Additional protective silicone pads
Conclusion
The SmallRig Cage for Sony A7R IV is a must-have accessory for camera professionals who want to protect their camera bodies while expanding functional rigging options. Its solid three-point locking, anti-twist mounts, extensive threaded holes, and compatibility with popular accessories provide an excellent foundation for a versatile and reliable filmmaking setup.
Lightweight yet durable, this cage enhances not only protection but also usability, ensuring full access to essential camera controls and seamless integration with SmallRig’s ecosystem.
Whether shooting cinematic projects or content creation workflows, it stands as an essential component enabling creative flexibility and camera safety in demanding production environments.
