{"product_id":"canon-ef-800mm-f-5-6l-is-usm","title":"Canon EF 800mm f\/5.6L IS USM","description":"\u003ch2\u003eQuick Release Foot Replacement for Canon EF 800mm f\/5.6L IS USM\u003c\/h2\u003e\n\n\u003cp\u003e\nThe \u003cstrong\u003eHejnar Photo Quick Release Foot Replacement\u003c\/strong\u003e is a precision‑machined Arca‑type foot designed specifically for the \n\u003cstrong\u003eCanon EF 800mm f\/5.6L IS USM\u003c\/strong\u003e super‑telephoto lens. It incorporates \n\u003cstrong\u003etwo stainless‑steel QD sockets\u003c\/strong\u003e for attaching standard push‑button QD mounts, providing secure strap attachment trusted by NASA, law enforcement, and military agencies.\n\u003c\/p\u003e\n\n\u003cp\u003e\nRemove the original Canon foot and install the Hejnar replacement using the factory screws. If mounting screws loosen over time, applying Loctite 242 is recommended for added security.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis foot provides comfortable finger clearance under the lens, maintains full access to the focusing ring, and allows the hood to reverse for storage. The double‑dovetail design enables dual clamping surfaces for flexible positioning on Arca‑type rails and clamps.\u003c\/p\u003e\u003cul\u003e\n\u003c\/ul\u003e","brand":"Hejnar Photo","offers":[{"title":"Default Title","offer_id":67701622997097,"sku":"SIGFR-005-C1","price":85.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/1278\/9353\/files\/SIGFR-005-1-2.jpg?v=1792111667","url":"https:\/\/www.hejnarphotostore.com\/products\/canon-ef-800mm-f-5-6l-is-usm","provider":"Hejnar Photo","version":"1.0","type":"link"}