Sigma 70-200mm f/2.8 DG DN OS Arca-Type Foot

The Hejnar Photo SIGFR-004 is a precision-engineered Arca-Swiss compatible replacement foot designed specifically for the Sigma 70-200mm f/2.8 DG DN OS lens. This upgrade provides a native Arca-type dovetail for professional tripod mounting, featuring a double-dovetail profile and dual integrated stainless steel Quick Detach (QD) sockets for maximum security and modularity.

Quick Overview

• Model: SIGFR-004
• Direct replacement specifically for the Sigma 70-200mm f/2.8 DG DN OS Lens
• Dual QD Sockets: Integrated stainless steel Quick Detach sockets for secure strap mounting
• Double-Dovetail Profile: Allows clamping from both the top and bottom surfaces
• Ergonomic Design: Ample clearance for focusing ring access and lens hood reversal
• 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 Sigma telephoto workflow with a replacement foot built for precision and reliability. The SIGFR-004 provides a rock-solid Arca-Swiss foundation, eliminating the need for bulky adapter plates. Its double-dovetail design ensures universal compatibility with Arca-style clamps from RRS, Kirk, Acratech, and Wimberley, while allowing for secondary accessory mounting on the upper dovetail surface.

Secure Carrying & Integration: This foot features two built-in stainless steel QD sockets, the gold standard for secure carrying trusted by military and aerospace industries. The push-button mechanism prevents accidental release, making it the safest way to carry your lens on professional sling straps. The foot is designed to maintain the lens's full functionality, ensuring no interference with the focus ring or hood storage.

Simple Installation

1. Use the included M3 hex key to remove the four factory Sigma screws.
2. Mount the SIGFR-004 using the four provided high-strength screws.
3. Note: For added security, we recommend applying a drop of Loctite 242 (blue) to prevent screws from loosening over time.

Specifications

• Lens Compatibility: Sigma 70-200mm f/2.8 DG DN OS
• Material: 6061-T6 Aluminum
• Finish: Black Anodized Coat
• QD Sockets: Two (2) Integrated Stainless Steel
• Hardware: M3 hex key and four mounting screws included