Bright Tangerine LeftField 3 Base Kit for Sony Rialto 1 and 2 Extension System

SKU: BTB40040034 MFR: B4004.0034
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Key Features

  • Enhance your Sony Rialto with this durable Bright Tangerine support rig base kit.
  • Achieve stable, professional shots using the vibration dampening LeftField base.
  • Easily adjust your camera setup with the included sliding top plate for balance.
  • Mount accessories securely with multiple 1/4"-20 and 3/8"-16 mounting points.
  • Lightweight aluminum build ensures compatibility without adding excess weight.
  • Use the sliding top handle for comfortable, secure camera support and maneuverability.
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Special Order Item?Estimated to Ship: 08/16/2025
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Bright Tangerine Sony Rialto Base Kit Specifications

Sliding Top Plate

Sliding Top Plate

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  • Color

    Black

  • Material

    Aluminum

  • Compatibility

    Sony Rialto 1 / Rialto 2

  • Mounting

    Multiple 1/4"-20 Threads
    Multiple 3/8"-16 Anti-Twist Threads
    2x 15mm Rod Ports

  • Dimensions

    4.5 x 4.5 x 1.2" (11.5 x 11.5 x 3cm)

  • Weight

    9.9 oz (280g)

Left Side Plate

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  • Color

    Black

  • Material

    Aluminum

  • Compatibility

    Sony Rialto 1 / Rialto 2

  • Mounting

    4x 3/8"-16 Anti-Twist Threads
    8x 1/4"-20 Threads
    1x ARRI-Standard Rosette
    2x Captive Mounting Screws

  • Dimensions

    6.9 x 1.3 x 1" (17.5 x 3.2 x 2.5cm)

  • Weight

    3.5 oz (100g)

Right Side Plate

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  • Color

    Black

  • Material

    Aluminum

  • Compatibility

    Sony Rialto 1 / Rialto 2

  • Mounting

    5x 3/8"-16 Anti-Twist Threads
    8x 1/4"-20 Threads
    1x ARRI-Standard Rosette
    2x Captive Mounting Screws

  • Dimensions

    6.9 x 2.2 x 1" (17.5 x 5.5 x 2.5cm)

  • Weight

    3.5 oz (100g)

Split Riser

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  • Color

    Black

  • Material

    Aluminum

  • Compatibility

    Sony Rialto 1 / Rialto 2
    Bright Tangerine LeftField Baseplate System

  • Mounting

    4x 3/8"-16 Screws
    6x M4 Screws

  • Dimensions

    5.5 x 3.4 x 2.2" (14 x 8.7 x 5.5cm)

  • Weight

    6 oz (170g)

Sliding Top Handle

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  • Color

    Black

  • Material

    Aluminum

  • Compatibility

    Attaches onto Camcorder Support for: Universal

  • Attachment Method

    Attaches via 2x Included 1/4"-20 Screw

  • Accessory Mounting

    Multiple 1/4"-20 Thread
    Multiple 3/8"-16 Thread
    Multiple ARRI Anti-Twist 3/8"-16 Thread

  • Shoe Mounting

    1x Built-In Cold Shoe Slot

  • Rosettes

    No

  • Rail Mounting

    No

  • Rotation

    No

  • Built-In Controls

    No

  • Dimensions

    5.9 x 3.09 x 2.4" (15 x 7.86 x 6.1cm)

  • Weight

    8.8 oz (250g)

  • UPC Code

    008523275745

About Bright Tangerine Sony Rialto Base Kit

- Sliding Top Plate -
The Top Plate for the Sony Rialto Extension Unit adds a sliding, quick-release platform. This allows you to easily switch between interchangeable dovetails, giving you endless support and accessory mounting possibilities. Whether you need a top handle, gimbal mount, or more. It even offers underslung modes using ARRI standard dovetails for added flexibility.

The front of this Top Plate features 15mm LWS rod support, and when combined with the side plates and baseplate, it creates a sturdy cage.

Speed up your workflow when working with the Sony Rialto with a sliding top plate featuring quick-release dovetails. It combines with the side & bottom plates to form a completely rigid cage.

Fast Setup Changes
Switch effortlessly between gimbal and handheld modes or switch out handles and support accessories in a matter of seconds with our quick-release dovetail plates.

These low profile dovetails are equipped with helicoiled 3/8"-16 and 1/4"-20 threads, specifically designed to fit Freefly Systems Movi and DJI Ronin 2 gimbal systems.

They also offer compatibility with various top handles, giving you the flexibility to customize according to your requirements.

With a hole depth of 10mm, each thread provides excellent support and engagement for all your accessories.

Enhanced Safety Measures
Experience maximum reliability and safety on set with the addition of multiple safety mechanisms. Our safety feature prevents the clamp from opening fully, giving you peace of mind even in fast-paced situations.

To completely lock off the dovetail, the deadlock screw can be engaged, anchoring the dovetail plate into the central position.

Interchangeable Locking Mechanism
Choose between the preinstalled lever lock or swap it out for a sleek space saver lock option. With a 4mm Hex key, you can securely lock and unlock the clamp, eliminating the risk of accidental release.

Integrated 15mm Rod Support
The front of the top plate features integrated 15mm rod support, perfect for adding EVFs, lens motors and other accessories.

With our adjustable bracket, you have the flexibility to set it at the standard 15mm LWS height or lower it, enabling the dovetail to slide over for improved balance. The bracket can be inverted or completely removed to suit your specific needs.

Underslung Mode
For moments where you want to undersling the camera, the clamp is compatible with ARRI standard dovetails.

Film Hook Plane & Side Plate Mounting Points
On each side of the top plate is a mounting point with locating holes for the side plates. The right side also features a relocating point for the film hook plane.

Compatibility
The Sliding Top Plate is compatible with the Sony Rialto Extension Unit 1 & 2.

Part of the LeftField System for the Sony Rialto
Create your perfect setup for the Sony Rialto using our LeftField System. Explore a wide selection of accessories to enhance your rig and tailor it to your specific requirements.

Zero Compromises
Absolutely no compromise has been made in our manufacturing process. Our engineering is focused on creating products that are both high-performance and enabled with a longer life of service. Combine that with unparalleled level of Bright Tangerine support.


- Split Riser -
This riser comprises of two parts and sets the Sony Rialto Extension Unit to 15mm LWS standards when combined with B4003.1034 LeftField 3 15mm LWS Baseplate.

The split design allows the cage to quickly detach from the baseplate, creating a low profile design for easier balancing on gimbals & Steadicam without complete disassembly.

The Rialto Split Riser features a two part design with an upper and riser plate. The riser plate combines with the LeftField 3 Baseplate core which then mounts to the upper plate.

The upper plate attaches directly to the bottom of the Rialto Extension Unit. The fore/aft positioning of the camera can be adjusted for optimal balance before engaging the locating pins to ensure proper alignment.

Gimbal Ready
For gimbal & Steadicam work, the camera can be quickly detached from the baseplate providing a low profile form factor, ready to be connected to dovetails and other quick release plates with a stable 75mm wide base By removing the baseplate, it lowers the center of gravity and reduces the overall weight of the build.

Combines with Side & Top Plates
The upper plate provides mounting points for B4004.1031 & B4004.1032 Side Plates. Combined with B4004.1030 Sliding Top Plate, they form a rigid cage around the camera.

Perfect Alignment
Locating holes on the bottom of the upper plate, match up with the pins on the riser ensuring perfect alignment and consistency when reattaching the baseplate.

Compatibility
The Split Riser is compatible with the Sony Rialto 1 or 2 system, and compatible with our LeftField 15mm LWS Baseplates


- Sliding Top Handle -
The Sliding Top Handle is a sturdy top handle that mounts via two 1/4" screws spaced 50mm apart. The handlebar can slide forwards and backwards for optimal balance and features 1/4" and 3/8" threads, as well as a cold shoe mount and QD sockets for extensive customization options.

Made from lightweight anodized aluminum, the Sliding Top Handle is a durable and highly customizable rigging solution.

Build up your RED rig with the Sliding Top Handle: ideal for cameras like the RED KOMODO, KOMODO-X or V-RAPTOR. Attaching via two 1/4"-20 screws, the Top Handle provides a comfortable and convenient grip. You can precisely adjust the positioning of the handle itself using the top bracket, sliding the Top Handle forwards and backwards for optimal balance - the handle features safety buttons at either end to prevent it falling out.

Versatile Design
The Sliding Top Handle mounts securely via two 1/4" screws, but the top bracket allows for sliding travel of the handlebar itself. This means you can reverse the handle on its mount or simply rebalance it in moments, with the winged-lever clamp and safety stops ensuring the handle doesn't fall off mid-take.

Customize without Compromise
You can also build on the Sliding Top Handle - literally. The handle is fully compatible with our range of Handle Extensions, allowing you to create a handle design for any shooting scenario. In addition, the Top Handle boasts a range of 1/4" and 3/8" anti-twist screw threads - along with a cold shoe mount and quick-detach (QD) sockets.

RED Rigging Options
Alongside these more universal accessory mounts, the Sliding Top Handle also has features purpose-built for our RED cameras. The side threads are perfectly positioned to accommodate our Monitor Mount for DSMC3 RED Touch bracket, allowing you to conveniently mount the monitor from the end of your top handle. Additionally, it can be combined with our Top Bar Bracket for added rod support for lens motors or other accessories.

Built to Last
The Sliding Top Handle is made from anodized aluminum, which provides a practical balance of strength and weight. Wear and corrosion-resistant, the Top Handle is light enough for handheld run-and-gun rigs but sturdy enough to build on with its array of accessory threads.

Part of the RED Camera System
Enhance the possibilities of RED cameras such as the RED KOMODO or V-RAPTOR with our range of lightweight and durable accessories: offering new customization and protection options no matter your rigging needs.

Compatibility
The Sliding Top Handle mounts via two 1/4" screw threads, spaced 50mm apart. This makes it compatible with a range of top plates and mounting points.

Zero Compromises
Manufactured in the heart of the UK, Bright Tangerine are committed to the highest standards of quality. Researched, designed and tested by a team of experts; our products are the number-one choice of professional filmmakers worldwide. Our customer support team are on hand to help with any product issues, and provide the most reliable advice on all of our products.

Bright Tangerine Sony Rialto Base Kit Features

  • Sliding Top Plate
  • Mounts to the top of Sony Rialto Extension Unit and combines with side & bottom plates to form a rigid cage
  • Interchangeable dovetail plates can be preconfigured for handles, gimbal mounts & more
  • ARRI standard clamp can be used for dovetail plates or balance plates for underslung setups with multiple safety mechanisms to prevent any accidental release
  • Provides multiple 3/8" Anti-twist & 1/4" threads and position for film plane hook on each side
  • 15mm rod mount can be used for EVF mounts, lens motors & other accessories with adjustable vertical position for LWS or low mode. Can also be removed completely if needed
  • Left Side Plate
  • Creates a strong, stable cage to rig your Sony Rialto System
  • Adds a range of mounting points & ARRI standard rosette for hand grips
  • Low profile to stay on the system for compact builds
  • Attaches to B4004.1030 Sliding Top Plate & B4004.1033 Split Riser
  • Right Side Plate
  • Creates a strong, stable cage to rig your Sony Rialto System
  • Adds a range of mounting points & ARRI standard rosette for hand grips
  • Lets you set up the Rialto in portrait mode with additional mounting point
  • Low profile to stay on the system for compact builds
  • Attaches to B4004.1030 Sliding Top Plate & B4004.1033 Split Riser
  • Split Riser
  • Consists of upper & riser plates setting 15mm LWS height standard with the baseplate core
  • Forms a rigid cage when combined with side & top plates
  • Speeds up setup changes with detachable riser plate, creating a low profile setup for gimbal & Steadicam work
  • Camera can be adjusted fore/aft on baseplate for optimal balance with locating pins ensuring proper alignment
  • Sliding Top Handle
  • Sliding Travel - Use the Top Handle bracket to slide the handlebar forwards and backwards
  • Customizable - The Top Handle features 1/4" and 3/8" screw threads along with QD sockets and a cold shoe mount
  • RED Rigging - Add to your RED camera with dedicated slots for additional RED accessories
  • Durable - The Top Handle is made from lightweight anodized aluminum

Warranty Information

This product has a limited warranty of 60 months for parts and 12 months for labor.

Key Features

  • Enhance your Sony Rialto with this durable Bright Tangerine support rig base kit.
  • Achieve stable, professional shots using the vibration dampening LeftField base.
  • Easily adjust your camera setup with the included sliding top plate for balance.
  • Mount accessories securely with multiple 1/4"-20 and 3/8"-16 mounting points.
  • Lightweight aluminum build ensures compatibility without adding excess weight.
  • Use the sliding top handle for comfortable, secure camera support and maneuverability.

What's in the box:

  • Sliding Top Plate
  • Left Side Plate
  • Right Side Plate
  • Split Riser
  • Sliding Top Handle
  • Bright Tangerine 5 Year Limited Warranty