The EF 500mm f/4L IS II USM is a high-magnification, super-telephoto lens featuring integrated Image Stabilizer technology. The perfect solution for wildlife, nature & sports photographers working in the field. The EF 500mm 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.