The Canon RF 600mm f4 L IS USM is a specialised super-telephoto lens that affords remarkable image quality whatever the weather. It has been designed around the RF lens mount, delivering lightning-fast focusing, 5 stops of intuitive image stabilisation and edge-to-edge clarity. The sizeable f4 maximum aperture excels in low-light conditions, granting sensational depth-of-field control and reliable image quality throughout. This lens is well-suited to sporting events, safaris, and wildlife photography - with ASC (Air Sphere Coating) minimising the effects of ghosting and flare. You have the option between three key manual-focus speeds for precise control, whilst two custom presets can be saved for fast-action recall. If autofocus is more your thing, the dual-powered ring-type USM focus drive guarantees speed and a quiet response; allowing you to track fast-moving subjects and obtain initial focus almost immediately. This lens is also dust and moisture resistant - truly optimised for the