High-Image Quality and Optical Design

There is a lot that contributes to the optical quality of this lens, and it starts with four Ultra-low Dispersion (UD) elements (marked as dark green). The large-diameter UD lens in the front lens element group is a unique configuration previously found only in L lenses. This configuration effectively corrects chromatic aberration, reduces the weight of the front lens element group, and contributes to ease of use by suppressing the change in the center of gravity felt by the user when changing the zoom range.

Improvements in the manufacturing process have enabled the first-time use of a replica aspherical lens element with a larger diameter than in the past for the front lens, delivering even better image quality, and helps contribute to the lens’ overall compact size. The lens provides clear, high-resolution images from the maximum to minimum apertures. This design also features dust- and weather-resistant construction (another feature borrowed from the L-series lens line).

Action!

This lens is for more than just still shots, your video adventures and productions will benefit as well. The leadscrew-type STM focusing motor is extremely quiet and the 16mm-28mm zoom range is great for vlogging at home, or filming on the street. Compatible with focus breathing correction that is corrected electronically by the camera, this lens lends even more professionalism to your productions.