The Canon RF 600mm f/4L IS offers the same optical design as the revered EF 600mm f/4L IS III but is built specifically for Canon's new EOS R system. This RF mount lens maintains all the quality expected from Canon's L-series line and is equipped with the following features:

• Optical Image Stabilization with up to 5.5 stops of shake correction and includes 3 IS operation modes: general/continuous shake correction, stabilization when panning, and immediate/shutter-release correction.
  
• Super Spectra and Air Sphere coatings to maintain overall image quality, color fidelity, and minimize ghosting and flaring especially in back-lit situations.
  
• Compatibility with RF 1.4x and 2x extenders to give you an equivalent focal length of 840mm or 1200mm (extenders not included).
  
• Customizable electronic manual focus ring so you can select from 3 different speed levels to adjust manual focus, which can be easily accessed even when autofocus is engaged. Plus, access to 2 different memorized focusing distances to swiftly capture wildlife or action in an expected location.
  

  
  Despite the size of this lens, it is relatively lightweight and has intuitive handling. It is a great choice for wildlife, sports, ceremonies, air shows, and more.