This large-aperture standard zoom lens is the latest model of the new-generation Star ^(★) series, which is designed to provide the best possible image quality and accommodate the super-high-performance cameras of the future. Its newly designed optics assures greatly improved contrast and sharpness compared to previous models, while compensating various aberrations to a minimum and delivering sharp, clear images not only in the middle of the image field but at the edges.

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By incorporating one ED (Extra-low Dispersion) glass optical element, one anomalous dispersion glass optical element and two ED (Extra-low Dispersion) aspherical glass optical elements, it effectively minimizes chromatic aberration over the entire zoom range.