Canon EF 600mm f/4L IS II USM Telephoto The EF 600mm f/4L IS II USM is a high-magnification, super-telephoto lens featuring integrated Image Stabilizer technology and a fast f/4 maximum aperture. Perfect for wildlife, nature and sports photographers working in the field. Features High-performance 600mm lens Fluorite and UD elements Fast f/4 max aperture Ring-type USM for fast AF 4-stop Image Stabilizer Protective fluorine coating on front and rear elements 4.5m min focus 9 blade aperture Power focus for video Dust and moisture resistant Get close to the action Compact lightweight super-telephoto The EF 600mm f/4L IS II USM features a lightweight magnesium alloy and titanium construction, which reduces weight without compromising on strength and build quality. Sophisticated optical design A complex optical design that features fluorite and UD lens elements to tackle aberrations and distortions. A fast f/4 maximum aperture enables use of the Canon Extender EF 2.0x III while retaining AF on EOS-1 series cameras. Fast, quiet auto focus A ring USM (Ultrasonic motor) uses ultrasonic frequency vibrations to drive extremely rapid auto focus with near-silent operation. A high-speed CPU and optimised AF algorithms contribute further to AF speed. Full time electronic manual focus override is available without having to switch out of AF. Image Stabilizer Built-in Image Stabilizer (IS) technology enables hand-held shooting with shutter speeds up to four stops slower than normal without incurring camera shake. Multiple IS modes improve image quality when panning. IS Mode 3 Ideally suited for all types of action photography especially those disciplines that require the utilisation of panning, the new IS mode 3 only activates the Image Stabilizer element during exposure. Enhanced image quality with SWC coating Designed for use in digital photography, Canon’s patented Subwavelength structure coating helps minimise the ghosting and flare caused by internal reflections. By eliminating the cause, the coating reduces reflections and helps to deliver crisp, clear images. Power focusing The EF 600mm f/4L IS II USM’s two-speed Power Focus mode allows focus to be adjusted at a smooth constant speed – perfect when shooting video. L-series quality The L-series is Canon's flagship professional lens range, representing the best in precision-designed EF optics. L-series lenses combine superior performance with superlative handling, and are resistant to dust and moisture. Accessories The EF 600mm f/4L IS II USM is supplied with Lens Hood (ET-160 WII), Lens Cap (E-185B) and Lens case 600B.