The EF 600mm f/4L IS II USM is a high-magnification, super-telephoto lens featuring integrated Image Stabilizer technology & a fast f/4 maximum aperture. Perfect for wildlife, nature & sports photographers working in the field. The EF 600mm f/4L IS II USM features a lightweight magnesium alloy & titanium construction, which reduces weight without compromising on strength & build quality. Designed for use in digital photography, Canon’s patented Subwavelength structure coating helps minimise the ghosting & flare caused by internal reflections. By eliminating the cause, the coating reduces reflections & helps to deliver crisp, clear images. High-performance 600mm lens Fluorite & UD elements Fast f/4 max aperture Ring-type USM for fast AF 4-stop Image Stabilizer Protective fluorine coating on front & rear elements 4.5m min focus 9 blade aperture Power focus for video Dust & moisture resistant