A detailed 23 elements, 17 groups optical design incorporates seven anomalous partial dispersion elements to substantially lower chromatic aberrations throughout the zoom range and offer faithful color precision that is void of fringing.
The f2.8-4 maximum aperture advantages operating in a range of lighting conditions as well as provides higher control over focus position for dealing with shallow depth of field.
Created as an apt-performing tele zoom covering a broad range of focal lengths, this well-corrected optic maintains consistently high clarity and sharpness throughout the long-reaching zoom range.