The Canon EF 70-200mm f/2.8L IS II USM telephoto lens features one fluorite and five UD elements for increased optical quality and reduced chromatic aberration. It has a minimum focusing distance of 1.2m/3.9 ft. at all zoom settings, which is useful for photographers in smaller spaces trying to get closer to a subject. It features a next-generation Optical Image Stabilizer, providing up to 4 stops of correction at all focal lengths.
As with all L-series lenses, the Canon EF 70-200mm f/2.8L IS II USM is dust- and moisture-resistant and designed for use in the challenging environments typical of rigorous professional use.
Built for the professional, the body structure of the new EF 70-200mm f/2.8L IS II USM lens has been enhanced to provide better durability and strength without a significant increase in weight.
Canon has improved optical performance on the new EF 70-200mm f/2.8L IS II USM lens by redesigning the internal elements, incorporating a fluorite element and a fifth UD element. The use of the fluorite element and five UD elements helps to minimize secondary chromatic aberrations and produce better image quality with improved contrast and resolution through the entire zoom range; the end result is an optically precise lens worthy of becoming the leader of Canon's L-series lenses.
Along with its redesigned optical elements, the new lens design features improved AF speed due to a new focusing algorithm and has reduced the minimum focusing distance to 3.9 feet (1.2 meters) through the entire zoom range, allowing photographers to capture tighter portraiture shots in a small studio space. The previous lens model's minimum focusing distance was 4.6 feet (1.4 meters), whereas now photographers can stand nearly 8 inches closer to their subject and achieve sharp focus and tight crops.
Canon has also enhanced the Image Stabilization allowing it to compensate for shutter speeds up to four steps slower than 1/focal length, a one step improvement over the previous lens model.
"Canon's core has always been our optics, and we are constantly challenging ourselves to produce better and more advanced optical systems for our customers. The new EF 70-200mm f/2.8L IS II USM lens incorporates the best advancements in Canon lens technology from the past few years and packages it into what we believe will be the most popular lens for professionals and advanced photographers," stated Yuichi Ishizuka, senior vice president and general manager, Consumer Imaging Group, Canon U.S.A.
The enhanced magnesium alloy barrel design of the EF 70-200mm f/2.8L IS II USM lens features added strength with a minimal 20-gram increase in weight compared with the previous model (1490g vs. 1470g) and retains Canon's protective seals and fittings providing dust and water resistance for those photographers working in adverse conditions.