Arca-Swiss Conversion Quick Release Clamp for Gitzo GH1780QR Ball Head

The Hejnar Photo FG1 Conversion Clamp is a precision-engineered upgrade designed to bring full Arca-Swiss compatibility to the Gitzo GH1780QR Ball Head. This 2.375-inch clamp replaces the proprietary Gitzo quick-release platform, allowing you to seamlessly integrate professional Arca-type plates, L-brackets, and rails into your workflow. Proudly CNC-machined in the USA from solid 6061-T6 aluminum, it provides an unyielding, high-performance foundation for demanding photographic environments.

SAE Technical Specifications

• Compatibility: Engineered specifically for the Gitzo GH1780QR Ball Head (also compatible with GH2780QR).
• Jaw Length: 2.375 inches (60.3mm).
• Weight: 4.1 oz (114g).
• Safety Features: Two 2.6mm deep relief grooves ensure compatibility with safety-stop-equipped plates to prevent accidental free-fall.
• Tongue-in-Pocket Design: Shields internal threaded parts from dust and grit while maintaining perfect jaw alignment.
• Material: CNC-machined solid 6061-T6 Aircraft-Grade Aluminum.
• Finish: Durable black hard-coat anodized surface for advanced wear resistance.
• Manufacturing: Designed and manufactured with pride in the USA.

Detailed Installation Instructions

Modernize your Gitzo ball head in just a few simple steps:

1. Remove Factory Clamp: Loosen and unscrew the original mounting screws holding the Gitzo quick-release assembly to the ball stem.
2. Mount the FG1 Clamp: Place the Hejnar FG1 clamp onto the ball head, ensuring proper alignment with the mounting holes.
3. Secure the System: Fasten the clamp securely using the provided industrial-grade hardware. For long-term reliability, a drop of medium-strength thread-lock (such as Loctite Blue) is recommended.

Quick Overview & Key Features

• Universal Standard: Enables full compatibility with Arca-Swiss style plates from Hejnar Photo, RRS, Kirk, Wimberley, and Markins.
• Advanced Jaw Design: The tongue-in-pocket engineering prevents the moving jaw from hinging backward, ensuring monolithic clamping force.
• Captive Knob: The one-piece ergonomic knob stops at its maximum opening and cannot be lost in the field.
• Zero Rotational Play: Precision-milled registration channels lock the clamp permanently in place for absolute stability.

Comprehensive Product Description

The Hejnar Photo FG1 Arca-Swiss Conversion Clamp is the definitive solution for photographers who demand the precision of Gitzo engineering combined with the modular flexibility of the Arca-Swiss ecosystem. By converting your GH1780QR ball head, you bypass the inherent limitations and limited plate options of proprietary Gitzo quick-release systems, ensuring your micron-level gear adjustments translate perfectly to your final capture.

This clamp is a new product design engineered for unyielding stability under professional equipment loads. The advanced "tongue-in-pocket" design protects internal threaded parts from dust, sand, and grit, while keeping the jaws perfectly aligned with the geometry of your plate. Whether you are conducting critical architectural work or conducting high-magnification macro photography, this clamp maintains a monolithic connection that factory components simply cannot match.

Proudly made in the USA, this component provides the structural integrity and technical excellence that defines Hejnar Photo hardware. It is a robust, intelligent investment that modernizes your existing support architecture for ultimate reliability across all your tripod and monopod rigs.