300 mm f/2.8 L IS USM Lens

The Canon EF 300mm f/2.8L IS USM Telephoto Lens is newly equipped with an Image Stabilizer enabling hand-held shooting for easier movement. The fluorite element and two UD-glass elements effectively correct the chromatic aberrations prone to occur with telephoto lenses. With the EOS-1v and EOS-3, the AF speed becomes the world?s fastest. To reduce the overall weight and enhance portability, the lens barrel and many other exterior parts use a magnesium-alloy. Also, the detachable tripod collar revolves smoothly and locks securely. High-performance L-series super-telephoto lens series with built-in dual-mode Image Stabilizer (IS) function. Ultra-high image quality through new optical designs with Fluorite and UD Glass. World's highest AF speed with improved Ring USM (Ultrasonic Motor) and new algorithms for focus prediction with moving subjects. Magnesium alloy lens barrels for reduced weight & rugged reliability.