The EF 300 mm f/4L IS USM Telephoto Lens from Canon is a compact L-series telephoto lens with an Image Stabilizer. This Image Stabilizer compensates for camera shake and provides clear photographs. The Image Stabilizer provides two modes - Stabilizer Mode 1 and Stabilizer Mode 2. Stabilizer Mode 2 steadies the image during horizontal or vertical panning and detects the panning direction automatically. With a minimum focusing range of 4.9 feet from the film plane to subject, this telephoto Lens allows versatile and detailed subject selection, for an easy and enjoyable picture-taking experience.