Arca-Swiss Conversion Adapter for Manfrotto 501PL, 502, 504, Nitro, RC3, RC5, and NG Heads

The Hejnar Photo MF501 Conversion Plate is a professional-grade solution designed to bring universal Arca-Swiss compatibility to your Manfrotto video support system. This 3.50-inch adapter plate features a built-in Arca-type clamp, allowing you to bypass proprietary Manfrotto sliding plates and utilize your preferred Arca-style L-brackets and camera plates directly on fluid video heads. Precision CNC-machined in the USA from solid 6061-T6 aluminum, it provides an unyielding, monolithic foundation for technical videography and hybrid shooting.

SAE Technical Specifications

• Compatibility: Engineered for Manfrotto 501PL, 502, 504, Nitro, RC3, RC5, and 701 NG heads.
• Plate Length: 3.50 inches (89mm) for balanced support.
• Integrated Clamp: Features a smooth-engagement Arca-type quick-release mechanism built directly into the plate.
• Material: CNC-machined from high-density 6061-T6 Aircraft-Grade Aluminum.
• Finish: Durable black hard-coat anodized surface for superior abrasion resistance.
• Manufacturing: Designed, machined, and quality-tested in the USA.

Quick Overview & Key Features

• Direct System Hybrid: Transitions your video rig from Manfrotto dovetails to Arca-Swiss standards without stacking multiple adapters.
• Enhanced Stability: Replaces factory components with a rigid aluminum bridge to minimize vibration and eliminate "play" during panning and tilting.
• Streamlined Workflow: Perfect for videographers using DSLRs or mirrorless cameras who want to move quickly between photography ball heads and fluid video heads.
• Zero Rotational Play: The one-piece integrated design ensures the clamp remains perfectly aligned with the head's axis.

Comprehensive Product Description

The Hejnar Photo 3.50-Inch Manfrotto Conversion Plate is the definitive upgrade for professionals who demand the smooth, fluid control of a video head combined with the universal flexibility of the Arca-Swiss ecosystem. By converting your 501PL, 502, or 504 series head, you bypass the inherent limitations of proprietary sliding plates, ensuring your framing remains perfectly aligned through every pan and tilt.

This plate is meticulously engineered for the unyielding stability required for heavy professional payloads. The high-density 6061-T6 aluminum construction provides a monolithic connection that factory components simply cannot match, effectively dampening vibrations for critical captures. Because the Arca clamp is integrated directly into the plate, it maintains a low center of gravity and reduces the bulk associated with stacking third-party clamps onto your existing Manfrotto plates.

Made in the USA, this component provides the structural integrity and technical excellence that defines Hejnar Photo gear, making it a superior alternative to mass-produced adapters from competitors. It is an intelligent, high-value investment that modernizes your existing support architecture for ultimate reliability across your entire gear bag.