Canon RF 400mm f/2.8 L IS USM Lens

RF-Mount Lens/Full-Frame Format
Aperture Range: f/2.8 to f/32
Optical Image Stabilizer
Super UD and Fluorite Elements
Super Spectra and Air Sphere Coatings
Customizable Electronic Focusing Ring
Two Focus Presets
Circular 9-Blade Diaphragm
Weather-Sealed Design, Fluorine Coating
Rotatable Tripod Collar