Higher image quality The FE 70-200mm F2.8 GM OSS II lens delivers clear and sharp images from the center to the edges of the frame throughout the entire zoom range, and excellent image quality is also achieved at the maximum aperture of F2.8. The lens uses two aspherical lenses, including an XA (super aspherical) lens with a surface accuracy of approximately 0.01 micron, so that the FE 70-200mm F2.8 GM OSS II can effectively control aberration changes during zooming and provide excellent resolution throughout the imaging area. The FE 70-200mm F2.8 GM OSS II also uses two ED (low dispersion) lenses and two Super ED (extra-low dispersion) lenses to significantly reduce chromatic aberration and prevent false colors.