{"title":"Sigma MC-21 Adapters","description":null,"products":[{"product_id":"sigma-mc-21-z-shape-foot-4-inch-base","title":"Sigma MC-21 Adapter Z-Shape Foot with 4\" Arca-Swiss Base","description":"\u003c!-- ===================== GRAY BANNER ===================== --\u003e \n\u003cdiv style=\"background:#e5e5e5;padding:12px 15px;margin-bottom:18px;\"\u003e \n    \u003cstrong\u003eZ-Shape Arca-Swiss Replacement Foot for Sigma MC-21 Mount Converter | 4-Inch Base\u003c\/strong\u003e \n\u003c\/div\u003e \n\n\u003c!-- ===================== SEO BLOCK (TOP) ===================== --\u003e \n\u003ch1\u003eSigma MC-21 Adapter Z-Shape Foot with 4\" Arca-Swiss Base\u003c\/h1\u003e \n\u003cp\u003e\n    The \u003cstrong\u003eZ-Shape Foot for the Sigma MC-21 adapter\u003c\/strong\u003e is a professional-grade mounting solution designed to provide the same stability and balance typically found on telephoto lenses with built-in foot collars. This assembly consists of a 4-inch Arca-Swiss compatible base and a vertical foot, allowing you to shift the mounting point away from the camera body for superior equipment balance. This setup is essential for photographers using the Sigma EF-L mount converter with heavier glass, ensuring a rock-solid, anti-twist connection.\n\u003c\/p\u003e \n\u003chr\u003e \n\n\u003c!-- ===================== QUICK OVERVIEW ===================== --\u003e \n\u003ch2\u003eKey Features \u0026amp; Quick Overview\u003c\/h2\u003e \n\u003cul\u003e \n    \u003cli\u003e\n\u003cstrong\u003eEnhanced Stability:\u003c\/strong\u003e Enables standard lenses to be used like telephoto lenses with a tripod collar for better weight distribution.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eAdjustable Balance:\u003c\/strong\u003e The vertical component can be repositioned at different locations along the 4-inch base to find the optimal center of gravity.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eProfessional Clearance:\u003c\/strong\u003e Specifically designed to resolve clearance issues when mounting the Sigma MC-21 on monopods, tripods, or in combination with L-brackets.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eUniversal Mounting:\u003c\/strong\u003e 4-inch base is natively compatible with Arca-Swiss style clamps from RRS, Kirk, Wimberley, and Markins.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003ePremium Build:\u003c\/strong\u003e Precision CNC machined from aircraft-grade 6061-T6 aluminum with a durable black hard-coat anodized finish.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eAmerican Made:\u003c\/strong\u003e Designed and manufactured in the USA.\u003c\/li\u003e\n\u003c\/ul\u003e \n\n\u003c!-- ===================== PRODUCT DESCRIPTION ===================== --\u003e \n\u003ch2\u003eProfessional Z-Shape Mounting System\u003c\/h2\u003e \n\u003cp\u003e \n    Upgrade your \u003cstrong\u003eSigma MC-21 mount converter\u003c\/strong\u003e with a modular Z-shaped assembly built for field reliability. By moving the mounting point beneath the adapter rather than the camera body, this foot reduces stress on the lens mount and improves overall stability when using adapted Canon EF or Sigma EF lenses. The low-profile design ensures your camera remains easily accessible while providing the necessary height for comfortable tripod use.\n\u003c\/p\u003e \n\u003cp\u003e \n    \u003cstrong\u003ePrecision Engineering and Modularity:\u003c\/strong\u003e This assembly is designed for the rigors of professional workflows. The vertical Z-component attaches directly to the Arca-type foot base, which is natively compatible with nearly all professional quick-release systems. Note that the specific Arca-Swiss replacement foot for the Sigma MC-21 adapter is required for use with this vertical assembly.\n\u003c\/p\u003e \n\n\u003c!-- ===================== SPECIFICATIONS ===================== --\u003e \n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e \n\u003cul\u003e \n    \u003cli\u003e\n\u003cstrong\u003eAdapter Compatibility:\u003c\/strong\u003e Sigma MC-21 EF-L Mount Converter\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eBase Length:\u003c\/strong\u003e 4.00 Inches (101.6mm)\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eFoot Dimensions:\u003c\/strong\u003e 1.8\" L x 1.765\" W x 2.125\" H\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.0 oz (56g) for assembly\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 6061-T6 Aluminum with Stainless Steel Hardware\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eMounting Hardware:\u003c\/strong\u003e One 1\/4-20 captive screw and two 1\/4-20 mounting screws included\u003c\/li\u003e \n\u003c\/ul\u003e","brand":"Hejnar Photo","offers":[{"title":"Default Title","offer_id":67701598879849,"sku":"Foot_Base_7","price":89.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/1278\/9353\/files\/Foot_Base_7-2.jpg?v=1792111047"},{"product_id":"sigma-mc-21-foot-with-l-bracket-dual-mountsigma-mc","title":"Sigma MC-21 Adapter Foot with L-Bracket","description":"\u003c!-- ===================== GRAY BANNER ===================== --\u003e\n\u003cdiv style=\"background:#e5e5e5;padding:12px 15px;margin-bottom:18px;\"\u003e\n\t\u003cstrong\u003eProfessional Arca-Swiss Foot and L-Bracket Assembly for Sigma MC-21 Adapter\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c!-- ===================== SEO BLOCK (TOP) ===================== --\u003e\n\u003ch1\u003eSigma MC-21 Adapter Foot with L-Bracket\u003c\/h1\u003e\n\u003cp\u003e\n    The \n\t\u003cstrong\u003eSigma MC-21 Foot with L-Bracket\u003c\/strong\u003e is a specialized mounting solution designed to maximize stability and versatility for professional photography systems. This unique assembly allows for the simultaneous use of two L-brackets—one mounted directly to the camera body and another to the MC-21 foot—providing an unprecedented level of support and modularity for telephoto and tilt-shift lens setups.\n\u003c\/p\u003e\n\u003chr\u003e\n\u003c!-- ===================== QUICK OVERVIEW ===================== --\u003e\n\u003ch2\u003eKey Features \u0026amp; Quick Overview\u003c\/h2\u003e\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eDual L-Bracket Capability:\u003c\/strong\u003e Unique design allows one L-bracket to be mounted to the camera and a second to the MC-21 foot simultaneously.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003ePrecision Balance:\u003c\/strong\u003e Shifting the mounting point between components provides additional clearance between the camera and foot base for better equipment balance.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eTilt-Shift \u0026amp; Telephoto Ready:\u003c\/strong\u003e Engineered specifically to support the rigorous demands of tilt-shift and super-telephoto lenses.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eArca-Swiss Standard:\u003c\/strong\u003e Fully compatible with Arca-type quick-release systems from RRS, Kirk, Wimberley, and Markins.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003ePremium Construction:\u003c\/strong\u003e Precision CNC machined from high-grade aircraft aluminum for lifelong durability.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eDurable Finish:\u003c\/strong\u003e Black hard-coat anodized surface for superior resistance to wear and scratches.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eAmerican Made:\u003c\/strong\u003e Proudly designed and manufactured in the USA.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- ===================== PRODUCT DESCRIPTION ===================== --\u003e\n\u003ch2\u003eAdvanced Modular Mounting for Sigma MC-21 Adapters\u003c\/h2\u003e\n\u003cp\u003e\n    Elevate your professional workflow with a \n\t\u003cstrong\u003emodular foot and L-bracket system\u003c\/strong\u003e specifically built for the Sigma MC-21 adapter. By shifting the primary mounting point away from the camera body, this assembly reduces stress on the lens mount and allows for the use of specialized glass, such as tilt-shift lenses, with full stability. The added space between the camera and the base of the foot ensures that cables and accessories remain easily accessible during complex shoots.\n\u003c\/p\u003e\n\u003cp\u003e\n\t\u003cstrong\u003eUnmatched Versatility for Dual-Bracket Setups:\u003c\/strong\u003e This assembly is the only solution that allows you to have two L-brackets active at the same time. This configuration is ideal for transition-heavy workflows, allowing for rapid switching between horizontal and vertical orientations on both the camera body and the lens adapter. Precision-crafted to work flawlessly with major Arca-type brands, this assembly is an essential upgrade for any L-mount mirrorless system using adapted EF or SA lenses.\n\u003c\/p\u003e\n\u003c!-- ===================== SPECIFICATIONS ===================== --\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eAdapter Compatibility:\u003c\/strong\u003e Sigma MC-21 Mount Converter (EF-L or SA-L)\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eMount Type:\u003c\/strong\u003e Arca-Swiss Compatible Dovetail\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Modular Dual L-Bracket Assembly\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 6061-T6 Aircraft-Grade Aluminum\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black Hard-Coat Anodized\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in the USA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hejnar Photo","offers":[{"title":"Default Title","offer_id":67701623095401,"sku":"Sigma-Arca-Foot-with-Z-LB25","price":170.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/1278\/9353\/files\/Sigma-Arca-Foot-with-Z-LB25-2.jpg?v=1792111682"},{"product_id":"sigma-mc-21-arca-swiss-replacement-footsigma-mc-21","title":"Foot Replacement for Sigma MC-21","description":"\u003c!-- ===================== GRAY BANNER ===================== --\u003e \n\u003cdiv style=\"background:#e5e5e5;padding:12px 15px;margin-bottom:18px;\"\u003e \n    \u003cstrong\u003eArca-Swiss Compatible Foot Replacement for Sigma MC-21 Mount Converter\u003c\/strong\u003e \n\u003c\/div\u003e \n\n\u003c!-- ===================== SEO BLOCK (TOP) ===================== --\u003e \n\u003ch1\u003eSigma MC-21 Adapter Arca-Swiss Replacement Foot\u003c\/h1\u003e \n\u003cp\u003e\n    This precision-engineered \u003cstrong\u003eArca-Swiss replacement foot\u003c\/strong\u003e for the \u003cstrong\u003eSigma MC-21 mount converter\u003c\/strong\u003e (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. \n\u003c\/p\u003e \n\u003chr\u003e \n\n\u003c!-- ===================== QUICK OVERVIEW ===================== --\u003e \n\u003ch2\u003eKey Features \u0026amp; Quick Overview\u003c\/h2\u003e \n\u003cul\u003e \n    \u003cli\u003e\n\u003cstrong\u003eDirect Replacement:\u003c\/strong\u003e Designed specifically to replace the original foot on the Sigma MC-21 EF-L Mount Converter.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eArca-Swiss Compatible:\u003c\/strong\u003e Native dovetail profile fits standard quick-release clamps from RRS, Kirk, Wimberley, and Markins.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eRock-Solid Stability:\u003c\/strong\u003e Provides a more secure and lower-profile mounting platform compared to the factory foot.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eAccessory Mounting:\u003c\/strong\u003e Includes a 1\/4-20 tapped hole for mounting to standard tripod studs or adding accessories.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003ePremium Construction:\u003c\/strong\u003e Precision CNC machined from aircraft-grade 6061-T6 aluminum for lifelong durability.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eHard-Coat Finish:\u003c\/strong\u003e Black hard-coat anodized surface for superior wear and scratch resistance.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eAmerican Made:\u003c\/strong\u003e Proudly designed and manufactured in the USA.\u003c\/li\u003e \n\u003c\/ul\u003e \n\n\u003c!-- ===================== PRODUCT DESCRIPTION ===================== --\u003e \n\u003ch2\u003eProfessional Arca-Type Mount for Sigma MC-21\u003c\/h2\u003e \n\u003cp\u003e \n    The \u003cstrong\u003eSigma MC-21 replacement foot\u003c\/strong\u003e solves common stability and clearance issues found when using the factory adapter foot on professional tripod heads. By integrating the \u003cstrong\u003eArca-Swiss dovetail\u003c\/strong\u003e 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.\n\u003c\/p\u003e \n\u003cp\u003e \n    \u003cstrong\u003eAdvanced System Integration:\u003c\/strong\u003e 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 \u003cstrong\u003eZ-shape foot assembly\u003c\/strong\u003e or L-bracket configurations, which provide additional space between the camera body and the tripod base for better equipment balance.\n\u003c\/p\u003e \n\n\u003c!-- ===================== SPECIFICATIONS ===================== --\u003e \n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e \n\u003cul\u003e \n    \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Sigma MC-21 Mount Converter (EF to L-mount)\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eDovetail Type:\u003c\/strong\u003e Arca-Swiss Standard\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 1.5\" L × 0.64\" W × 0.55\" H\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eMounting Port:\u003c\/strong\u003e One 1\/4-20 Tapped Hole\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e CNC Machined 6061-T6 Aluminum\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black Hard-Coat Anodized\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in the USA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hejnar Photo","offers":[{"title":"Default Title","offer_id":67701623160937,"sku":"Sigma-MC-21-Arca-Foot-","price":38.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/1278\/9353\/files\/Sigma-MC-21-Arca-Foot--2.jpg?v=1792111684"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/1278\/9353\/collections\/Sigma-Arca-Foot-with-Z-LB25-2.jpg?v=1792698531","url":"https:\/\/www.hejnarphotostore.com\/collections\/sigma-mc-21-adapters.oembed","provider":"Hejnar Photo","version":"1.0","type":"link"}