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Sony 100-400mm f/4.5 GM OSS Arca-Type Foot
Hejnar Photo 4.6 inch Arca-Swiss replacement foot for Sony 100-400mm GM OSS lens featuring a double-dovetail design and integrated QD socket.
 
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Hejnar Photo – Arca-Swiss Replacement Foot for Sony 400–800mm GM OSS

Sony 100-400mm f/4.5 GM OSS Arca-Type Foot

The Hejnar Photo replacement foot for the Sony 100-400mm f/4.5 GM OSS is a precision‑machined solution designed for maximum stability and secure handling. This 4.6-inch foot features a native Arca-Swiss dovetail and an integrated stainless steel Quick Detach (QD) socket, offering professional wildlife and sports photographers a robust mounting platform for their super-telephoto lens.

Quick Overview

  • Direct replacement specifically for the Sony 100–400mm f/4.5 GM OSS lens
  • Integrated QD Socket: Stainless steel Quick Detach port for push-button sling-style strap systems
  • Double-Dovetail Design: Enables dual clamping surfaces for added mounting flexibility
  • Arca-Swiss Compatible: Works with RRS, Markins, Wimberley, Kirk, Acratech, and other Arca-style clamps
  • Safety Security: Two integrated M3 safety-stop screws prevent accidental release
  • Precision C.N.C. machined from 6061-T6 Aluminum
  • Black anodized surface for a professional, durable finish
  • Made in the USA

Product Description

Upgrade your Sony super-telephoto glass with a mounting platform built for the rigors of field use. This Hejnar Photo foot replaces the original factory mount to provide a native Arca-Swiss dovetail, eliminating the need for universal adapter plates. Its 4.6-inch length provides an ample interface for balanced mounting on tripod heads, gimbal mounts, and monopods.

Advanced Mounting & Carrying: The double-dovetail profile allows for clamping from both the top and bottom surfaces, making it easy to attach flash brackets or rails while the lens is mounted. For carrying security, the integrated stainless steel QD socket offers a fail-safe connection for professional straps. This QD system is trusted by NASA, law enforcement, and military agencies for its anti-accidental-release design, ensuring your lens stays secure during transport.

Specifications

  • Lens Compatibility: Sony 400–800mm f/6.3–8 G OSS
  • Length: 4.6 inches
  • Weight: 3.84 oz (109g)
  • Material: 6061-T6 Aluminum
  • Finish: Black Anodized Coat
  • QD Socket: Integrated Stainless Steel
  • Hardware: Stainless steel mounting screw and hex key included

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