Arca-Swiss Conversion Kit for Manfrotto 393 Heavy Duty Telephoto Lens Support

The Hejnar Photo Manfrotto 393 Conversion Set is a precision-engineered upgrade that brings standardized Arca-Swiss compatibility to your heavy-duty telephoto support system. Specifically designed for the Manfrotto 393 gimbal-style bracket, this kit allows you to bypass proprietary Manfrotto plates and utilize high-end Arca-type L-brackets, rails, and camera plates. Proudly CNC-machined in the USA from solid 6061-T6 aluminum, this conversion ensures an unyielding foundation for technical wildlife, sports, and aviation photography.

SAE Technical Specifications

Detailed Installation Instructions

Modernize your lens support in three simple steps using the included hardware:

1. Remove the Factory Platform: Uninstall the original Manfrotto mounting platform using the provided hex wrench.
2. Secure the Adapter Plate: Attach the Hejnar conversion plate directly in place of the original platform using your factory Manfrotto screw.
3. Mount the Arca-Swiss Clamp: Secure the included quick-release clamp to the adapter plate using the provided heavy-duty mounting screws.

Quick Overview & Key Features

• Universal Arca Compatibility: Enables the use of plates and L-brackets from RRS, Kirk, Wimberley, and Markins.
• Precision Balancing: Centers heavy telephoto loads over the support axis, critical for the Manfrotto 393’s gimbal movement.
• Captive Knob Design: The ergonomic one-piece knob stops at maximum opening and cannot be lost in the field.
• Zero Rotational Play: Precision-milled registration grooves on the back of the clamp prevent twisting once secured.

Comprehensive Product Description

The Hejnar Photo Manfrotto 393 Conversion Set is the definitive solution for professionals who trust the heavy-duty gimbal-style control of the 393 support but demand the standardized flexibility of the Arca-Swiss ecosystem. By converting your head, you bypass the unwanted flexing and limited plate options of factory Manfrotto systems, ensuring your framing remains perfectly aligned even with massive 44lb payloads.

Crafted from a solid block of aircraft-grade 6061-T6 aluminum, the structural integrity of this system ensures zero deflection during critical shots. The clamp features a sophisticated "tongue-in-pocket" design that protects its internal threaded parts from dust, sand, and grit, while keeping the jaws perfectly aligned with your plate’s geometry. Whether you are tracking fast-moving wildlife or shooting high-resolution architectural details, this conversion kit restores full professional modularity to your setup.

Proudly made in the USA, this component provides the technical excellence and rigorous tolerances that distinguish Hejnar Photo from mass-produced alternatives. It is an intelligent, high-value investment that modernizes your existing support architecture for ultimate reliability across all your tripod and monopod rigs.