Class leading image quality across the entire 12x zoom range

Extremely fast aperture of T2.8 with no ramping

Superb image quality from open aperture

Precise and ergonomic focus ring with scale rotation of 327 degrees and over 70 focus witness marks

Interchangeable focus scale ring from feet to meters

Close focus of 4 ft - 1.22 m • Robust zoom / focus mechanism

Aberration correction properly carried out, high-tech corrective glass to improve performance