Arca-Swiss Compatible Lens Plate for Canon 300mm f/2.8L-IS and 400mm/f4-DO-IS

This precision-engineered Arca-Swiss compatible quick release plate is custom-tailored for the Canon EF 300mm f/2.8L IS USM and Canon EF 400mm f/4 DO IS USM telephoto lenses. Featuring a specialized double-dovetail design, 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.

Quick Overview & Key Features

• Dedicated Fit: Specifically contoured to interface seamlessly with the original foot of Canon 300mm f/2.8L-IS and 400mm/f4-DO-IS lenses.
• Double-Dovetail Profile: Bi-directional design provides upper and lower Arca-type clamping surfaces for mounting flash brackets and multi-axis rigs.
• Universal Compatibility: Standard dovetail configuration ensures total compatibility with quick-release clamps from RRS, Kirk, Wimberley, and Leofoto.
• Enhanced Balance Control: Extended length provides advanced fore-aft travel for fine-tuning your gear's center of gravity.
• Fail-Safe Engineering: Equipped with dual M3 safety-stop screws to prevent your telephoto assembly from sliding out of a loose clamp.
• Premium Construction: Precision CNC-machined from solid 6061-T6 aircraft-grade aluminum.
• Durable Hard-Coat Finish: Black hard-coat anodized surface provides maximum resistance against scratches and environmental wear.
• Made in the USA: Manufactured to demanding professional tolerances with corrosion-resistant stainless steel hardware.

Product Description

The dedicated quick release lens plate for the Canon 300mm f/2.8L-IS and 400mm/f4-DO-IS 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.

The core innovation of this plate is its premium double-dovetail profile. 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.

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.