Canon 600mm f/4.0 L IS III USM Lens Replacement Foot CFR-003

The Hejnar Photo CFR-003 is a precision-engineered lens replacement foot designed specifically for the Canon EF 600mm f/4L IS III USM lens. This durable Arca-Swiss compatible foot features a built-in stainless steel Quick Detach (QD) socket for heavy-duty sling straps and a double-dovetail profile for multi-accessory clamping. CNC-machined from solid aircraft-grade 6061-T6 aluminum.

Quick Overview & Key Features

• Exact Lens Fit: Custom replacement foot for the Canon EF 600mm f/4L IS III USM lens.
• QD Strap Integration: Built-in stainless steel QD socket for push-button sling mounts.
• Double-Dovetail Design: Dual clamping surfaces on the front and back support tripods and flash brackets simultaneously.
• Direct Arca Mounting: Arca-type dovetail eliminates the need for additional plates or adapters.
• Premium Materials: CNC-machined from solid 6061-T6 aluminum with black hard-coat anodizing.
• Made in the USA: Proudly manufactured with professional-grade tolerances.

Product Description

The CFR-003 replacement foot is the ideal professional upgrade for photographers looking to maximize the stability of their Canon EF 600mm f/4L IS III USM lens. This plate seamlessly integrates an Arca-Swiss compatible dovetail, allowing you to slide the lens directly into gimbal heads, ball heads, and tripod clamps without adding the bulk of extra plates.

The double-dovetail profile provides exceptional versatility. You can mount your primary camera setup to your tripod using the bottom track while using the top track to clamp on external flash brackets, video accessories, or macro rails.

A standout feature of this model is the integrated stainless steel Quick Detach (QD) socket. This military-grade carry system allows you to click on standard push-button sling-style straps for rapid transitions and comfortable outdoor carry, then detach instantly to mount onto your rig. The QD system is trusted globally for its secure, anti-accidental-release design.

How to Install:
To remove your original factory foot, use the M3 hex key tool that comes with the CFR-003 to completely extract the four Canon mounting screws. Install the CFR-003 replacement foot using the four supplied screws to secure the new replacement foot tightly to the lens collar. For added security in rugged outdoor conditions, consider applying a drop of Loctite 242 removable threadlocker to the screws.