Vario-Sonnar T DT 16–80mm F3.5-4.5 ZA Zoom Lens Black

Lens uses a design with 14 elements in 10 groups that helps provide a maximum aperture range of f/3.5-4.5 While simultaneously reducing flare and improving contrast
provide a versatile wide-angle to telephoto 24-120mm equivalent focal length
lens design to help reduce chromatic aberrations and color fringing for improved clarity and color neutrality
Four aspherical elements are incorporated in the lens design to reduce astigmatism, field curvature, coma, and other monochromatic aberrations
A zoom lock switch prevents the lens barrel from accidentally extending when not in use