Sigma MC-21 Adapter Arca-Swiss Replacement Foot

This precision-engineered Arca-Swiss replacement foot for the Sigma MC-21 mount converter (EF-L) is a critical upgrade for professional photographers. By replacing the original factory foot, you gain a native Arca-type dovetail connection that allows for direct mounting into professional quick-release clamps without the need for additional plates.

Key Features & Quick Overview

• Direct Replacement: Designed specifically to replace the original foot on the Sigma MC-21 EF-L Mount Converter.
• Arca-Swiss Compatible: Native dovetail profile fits standard quick-release clamps from RRS, Kirk, Wimberley, and Markins.
• Rock-Solid Stability: Provides a more secure and lower-profile mounting platform compared to the factory foot.
• Accessory Mounting: Includes a 1/4-20 tapped hole for mounting to standard tripod studs or adding accessories.
• Premium Construction: Precision CNC machined from aircraft-grade 6061-T6 aluminum for lifelong durability.
• Hard-Coat Finish: Black hard-coat anodized surface for superior wear and scratch resistance.
• American Made: Proudly designed and manufactured in the USA.

Professional Arca-Type Mount for Sigma MC-21

The Sigma MC-21 replacement foot solves common stability and clearance issues found when using the factory adapter foot on professional tripod heads. By integrating the Arca-Swiss dovetail directly into the foot, you eliminate the potential for twisting often associated with add-on plates. This "Micro-Vise" style connection ensures your camera and lens remain rock-solid, even when shooting with heavy telephoto glass or in vertical orientations.

Advanced System Integration: Installation is straightforward—simply remove the original Sigma foot and replace it using the original factory screws. This foot is also the foundational component for modular upgrades, such as our Z-shape foot assembly or L-bracket configurations, which provide additional space between the camera body and the tripod base for better equipment balance.

Technical Specifications

• Compatibility: Sigma MC-21 Mount Converter (EF to L-mount)
• Dovetail Type: Arca-Swiss Standard
• Dimensions: 1.5" L × 0.64" W × 0.55" H
• Mounting Port: One 1/4-20 Tapped Hole
• Material: CNC Machined 6061-T6 Aluminum
• Finish: Black Hard-Coat Anodized
• Origin: Made in the USA