The Hejnar Photo F-GH2780QR Conversion Clamp is a professional-grade hardware upgrade specifically engineered to bring universal Arca-Swiss compatibility to the Gitzo GH2780QR ball head. This 3.25-inch clamp replaces the proprietary Gitzo quick-release platform, allowing you to bypass proprietary limitations and standardize your gear. Proudly CNC-machined in the USA from solid 6061-T6 aluminum, it offers an unyielding foundation for demanding technical photography.

SAE Technical Specifications

• Compatibility: Designed exclusively for the Gitzo GH2780QR Center Ball Head.
• Jaw Length: 3.25 inches (82.5mm).
• Weight: 6.2 oz (176g).
• Mounting Hardware: Specifically matches the Gitzo three-screw equilateral mounting pattern.
• Safety Features: Two 2.6mm deep relief grooves ensure compatibility with safety-stop plates to prevent gear free-fall.
• Material: Precision CNC-machined from 6061-T6 Aircraft-Grade Aluminum.
• Finish: Durable black hard-coat anodized for superior abrasion resistance.
• Manufacturing: Designed, machined, and quality-tested in the USA.

Detailed Installation Instructions

Upgrade your Gitzo ball head in just a few minutes using the included hardware:

1. Remove Factory Clamp: Loosen and unscrew the three original screws holding the Gitzo QR assembly.
2. Mount the Hejnar Clamp: Position the new Arca-compatible clamp, ensuring it matches the head's three-screw geometry.
3. Secure the System: Fasten the clamp using the provided M3 hex cap bolts and Allen key. A drop of medium-strength thread-lock (Loctite Blue) is recommended for permanent stability.

Quick Overview & Key Features

• Universal Arca Standard: Enables full compatibility with plates and L-brackets from RRS, Kirk, Wimberley, and Markins.
• Tongue-in-Pocket Design: Protects internal threaded parts from dust and grit while keeping jaws perfectly aligned.
• Captive Knob: The ergonomic one-piece knob stops at maximum opening and cannot be lost in the field.
• Laser-Engraved Precision: Features scales on both jaws for repeatable, exact camera positioning.

Comprehensive Product Description

The Hejnar Photo F-GH2780QR Arca-Swiss Conversion Clamp is the definitive solution for professionals who demand the precision of Gitzo engineering combined with the modular flexibility of the Arca-Swiss ecosystem. By converting your GH2780QR head, you bypass the inherent limitations of proprietary Gitzo quick-release systems, ensuring your gear remains stable through critical exposures.

This clamp is a new product design engineered for unyielding stability under heavy professional camera loads. The high-density aluminum construction prevents the moving jaw from hinging backward during clamping, maintaining a monolithic connection to your gear. Whether you are conducting critical architectural work or high-magnification macro photography, this clamp maintains perfect alignment and eliminates unwanted flex.

Designed and manufactured in the USA, this component provides the structural integrity and technical excellence that defines Hejnar Photo gear, positioning it as a superior alternative to products from competitors like Really Right Stuff or Kirk. It is a robust, intelligent investment that modernizes your existing support architecture for ultimate reliability.