With a 110-degree field of view, this is a true super-wide lens, but Zeiss claims that the Distagon lens design keeps distortion and other undesirable optical effects to a minimum. It uses a lot of fancy tech to make it happen, including 15 elements in 12 groups. There are two aspheric elements, special glass with anomalous partial dispersion, as well as some floating elements. Like all the lenses in the line, flare is handled by the T* coating. And if past performance is any indicator, the flare fighting abilities will be very good.