{"product_id":"arca-swiss-lens-plate-canon-300mm-f2-8l-is-400mm-f","title":"Arca-Swiss Compatible Lens Plate for Canon 300mm f\/2.8L-IS and 400mm\/f4-DO-IS","description":"\u003c!-- ===================== GRAY BANNER ===================== --\u003e \n\u003cdiv style=\"background:#e5e5e5;padding:12px 15px;margin-bottom:18px;\"\u003e \n    \u003cstrong\u003eArca-Swiss Style Lens Plate for Canon 300mm f\/2.8L-IS and 400mm\/f4-DO-IS\u003c\/strong\u003e \n\u003c\/div\u003e \n\n\u003c!-- ===================== SEO BLOCK (TOP) ===================== --\u003e \n\u003ch1\u003eArca-Swiss Compatible Lens Plate for Canon 300mm f\/2.8L-IS and 400mm\/f4-DO-IS\u003c\/h1\u003e \n\u003cp\u003e\n    This precision-engineered \u003cstrong\u003eArca-Swiss compatible quick release plate\u003c\/strong\u003e is custom-tailored for the \u003cstrong\u003eCanon EF 300mm f\/2.8L IS USM and Canon EF 400mm f\/4 DO IS USM\u003c\/strong\u003e telephoto lenses. Featuring a specialized \u003cstrong\u003edouble-dovetail design\u003c\/strong\u003e, it provides dual clamping surfaces along the rail, allowing you to stack components, mount flash brackets, or interface with multi-axis support systems while keeping your setup perfectly balanced on professional tripod heads.\n\u003c\/p\u003e \n\u003chr\u003e \n\n\u003c!-- ===================== QUICK OVERVIEW \u0026 KEY FEATURES ===================== --\u003e \n\u003ch2\u003eQuick Overview \u0026amp; Key Features\u003c\/h2\u003e \n\u003cul\u003e \n    \u003cli\u003e\n\u003cstrong\u003eDedicated Fit:\u003c\/strong\u003e Specifically contoured to interface seamlessly with the original foot of Canon 300mm f\/2.8L-IS and 400mm\/f4-DO-IS lenses.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eDouble-Dovetail Profile:\u003c\/strong\u003e Bi-directional design provides upper and lower Arca-type clamping surfaces for mounting flash brackets and multi-axis rigs.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e Standard dovetail configuration ensures total compatibility with quick-release clamps from RRS, Kirk, Wimberley, and Leofoto.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eEnhanced Balance Control:\u003c\/strong\u003e Extended length provides advanced fore-aft travel for fine-tuning your gear's center of gravity.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eFail-Safe Engineering:\u003c\/strong\u003e Equipped with dual M3 safety-stop screws to prevent your telephoto assembly from sliding out of a loose clamp.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003ePremium Construction:\u003c\/strong\u003e Precision CNC-machined from solid 6061-T6 aircraft-grade aluminum.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eDurable Hard-Coat Finish:\u003c\/strong\u003e Black hard-coat anodized surface provides maximum resistance against scratches and environmental wear.\u003c\/li\u003e \n    \u003cli\u003e\n\u003cstrong\u003eMade in the USA:\u003c\/strong\u003e Manufactured to demanding professional tolerances with corrosion-resistant stainless steel hardware.\u003c\/li\u003e \n\u003c\/ul\u003e \n\n\u003c!-- ===================== PRODUCT DESCRIPTION ===================== --\u003e \n\u003ch2\u003eProduct Description\u003c\/h2\u003e \n\u003cp\u003e \n    The dedicated quick release lens plate for the \u003cstrong\u003eCanon 300mm f\/2.8L-IS and 400mm\/f4-DO-IS\u003c\/strong\u003e is an essential technical upgrade for wildlife, sports, and aviation photographers. Because super-telephoto tracking puts tremendous tracking and torsional stress on support gear, generic plates can easily shift or twist over time. This custom plate attaches firmly to your lens foot, creating an unyielding, rock-solid connection that feels like a native extension of your lens.\n\u003c\/p\u003e \n\u003cp\u003e \n    The core innovation of this plate is its premium \u003cstrong\u003edouble-dovetail profile\u003c\/strong\u003e. This specialized geometry offers independent clamping tracks on both the top and bottom surfaces. It allows you to lock the main rail securely into your ball head or gimbal clamp while simultaneously using the upper dovetail to attach complex technical setups, modular macro stages, or telephoto flash brackets without compromising structural stability.\n\u003c\/p\u003e \n\u003cp\u003e \n    Bespoke-crafted in the USA from ultra-strong 6061-T6 aluminum, this accessory offers an extended tracking area to distribute weight evenly across your quick-release receiver. All included mounting hardware is non-corrosive stainless steel, engineered to handle severe weather conditions in outdoor environments. This specialized lens plate ensures your super-telephoto glass remains perfectly stable, delivering the precise, vibration-free tracking your technical photography demands.\n\u003c\/p\u003e","brand":"Hejnar Photo","offers":[{"title":"Default Title","offer_id":67701601566825,"sku":"H107","price":44.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/1278\/9353\/files\/H107-2.jpg?v=1792111157","url":"https:\/\/www.hejnarphotostore.com\/products\/arca-swiss-lens-plate-canon-300mm-f2-8l-is-400mm-f","provider":"Hejnar Photo","version":"1.0","type":"link"}