Product Highlights

• A new era of standard zoom performance: No-compromise design and technology result in a constant F2.8 zoom lens that can fully utilize the potential of current and future high-resolution camera bodies. 
• Extraordinary resolution and bokeh: A XA (extreme aspherical) lens element with superlative surface precision not only contributes to stunning corner-to-corner resolution and detail throughout the zoom range, but also plays a vital role in achieving smooth, soft bokeh that can be a powerful expressive tool in a wide range of photographic situations.
• Natural rendering and color: One ED (Extra-low-Dispersion) and one Super ED glass element in an optical path that has been designed to the highest standards help to achieve lifelike, natural imagery without unnatural colouration by keeping axial and lateral chromatic aberration in check while maximizing subjective resolution for breathtaking texture and detail.
• 9-blade aperture enhances bokeh beauty: The remarkable beauty of this lens’s bokeh is further enhanced by a 9-blade circular aperture design that contributes not only to smoothness, but to natural highlights as well.
• Bright, fast F2.8 at any focal length: A constant F2.8 maximum aperture makes it easy to keep exposure settings constant throughout the zoom range to maintain low-light capability or action-stopping shutter speeds. Consistently spectacular image quality is ensured at any aperture or focal length.