Fujifilm XF 100-400mm f/4.5-5.6 R Lens Replacement Foot with QD

This precision-engineered lens replacement foot is designed specifically for the Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR lens. Measuring 3.725 inches in length, this Arca-Swiss compatible foot features an integrated stainless-steel Quick Detach (QD) socket, a double-dovetail profile for dual clamping, and dual safety-stop screws. CNC-milled from solid aircraft-grade 6061-T6 aluminum.

Quick Overview & Key Features

• Exact Lens Fit: Custom replacement foot designed for the Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR lens.
• QD Strap Integration: Built-in Quick Detach (QD) socket for push-button sling mounts.
• Double-Dovetail Design: Dual clamping surfaces on the top and bottom support tripods and flash brackets simultaneously.
• Ergonomic Clearance: Generous 1.2-inch clearance between the lens body and foot ensures comfortable handling and smooth clamp compatibility.
• Safety Features: Equipped with two M3 safety-stop screws to prevent accidental slide-out from loosened clamps.
• Accessory Mounting: Includes integrated 1/4-20 tapped holes for direct accessory or monopod attachment.
• Premium Materials: CNC-machined from solid 6061-T6 aluminum with a professional black hard-coat anodized finish and stainless steel hardware.
• Made in the USA: Proudly manufactured with tight tolerances and professional-grade machining standards.

Product Description

This Hejnar Photo lens replacement foot provides a stronger, more stable mounting platform than the factory base for the Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR lens. By integrating the Arca-Swiss dovetail directly into the foot, this design eliminates the need for additional plates, providing an ultra-secure connection to your tripod, gimbal, or support system.

A standout feature of this model is the integrated stainless-steel Quick Detach (QD) socket. Trusted for decades by NASA, law enforcement, and military agencies for its secure, anti-accidental-release design, this socket accepts standard push-button QD mounts. This enables a safe carry configuration in the field with rapid, one-handed transitions from a shoulder strap sling straight into an Arca-type tripod clamp.

The foot features a precision-cut double-dovetail profile, allowing you to use the bottom surface for primary tripod mounting while utilizing the top surface to clamp on external flash brackets, macro stages, or secondary rigging accessories. To prioritize safety, two M3 safety-stop screws are pre-installed at the ends of the track to prevent your gear from accidentally sliding out if the clamp is not fully closed.

Weighing as a highly balanced field addition, this 3.725-inch mounting surface offers exceptional structural rigidity without adding unnecessary bulk to your mirrorless kit. It features a generous 1.2-inch clearance layout below the lens barrel to ensure a comfortable finger grip when carrying your setup by the foot.