The Nano Crystal Coating System (NCS) is designed to enhance light transmission and reduce internal reflections, providing users with increased versatility in all shooting conditions. The lens features a fast F2.8 maximum aperture and close-focusing capabilities down to 9.5 inches, enabling maximum versatility across a wide range of shooting scenarios.

Optimized for exceptional optical quality, this lens delivers true ultra-wide 110-degree edge-to-edge coverage when used with APS-C sensor digital cameras. The optical design incorporates three high-precision lens elements, including two aspherical and one extra-low dispersion (ED) element, to ensure superior image quality.

The lens's inner focusing system (IF) ensures that the length of the lens does not change and the front element does not rotate during focusing, which helps to keep the integrated petal-type lens hood properly oriented, providing consistent and effective protection from stray light.

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