• High-performance, Wide-aperture 400mm f/2.8 Super-telephoto Lens, Exclusively for EOS R-series cameras
• Optically Identical to EF 400mm f/2.8L IS III USM lens; Minimum Focusing Distance of 8.20 ft. / 2.5 m
• Optical Image Stabilization with up to 5.5 Stops* of Shake Correction, Including Three IS Operation Modes
• Super Spectra Coating (SSC) and Air Sphere Coating (ASC) Helps Minimize Ghosting and Flare
• Compatible with Canon RF 1.4x and 2x Extenders
• Customizable Electronic Focus Ring, with Manual Focus Capability during SERVO AF
• 9-blade Circular Aperture for Beautiful Bokeh
• Two Focus Presets Available — Instantly Return to One or Two Memorized Focus Distances
• Dust- and Water-resistant Design, with Fluorine Coating on Front Element for Easy Cleaning