Japanese company Sigma has announced the 20-60mm f/2.8-4 DG Contemporary, a full-frame standard zoom lens for Sony E and Leica L mounts. The lens sits within the Contemporary line, which prioritizes compact dimensions and general versatility over the absolute optical performance of the Art series.

The most immediately distinctive characteristic of the lens is its wide end: where the category standard for full-frame zoom lenses typically begins at 24mm, the 20-60mm starts at 20mm — a difference that translates into a significantly wider angle of view, expanding from approximately 84 degrees at 24mm to 94.5 degrees at 20mm. The corresponding trade-off is a shorter long end: 60mm rather than the 70mm or 105mm of more conventional zoom ranges. The aperture is variable, starting at f/2.8 at 20mm and reaching f/4 at the telephoto end — a configuration that allows the wide-angle end to be used for night sky photography, though performance in that application will require independent evaluation.

The optical formula comprises 15 elements in 13 groups, with three aspherical elements and three SLD glass elements. The minimum focusing distance is 15.8 centimeters at 28mm, with a maximum magnification ratio of 1:2.3 at 35mm — a figure that approaches half-macro territory. At 60mm, the maximum magnification is 1:2.9, which remains strong for a zoom lens. Autofocus is handled by Sigma’s High-response Linear Actuator, and the lens is stated to produce minimal focus breathing, a consideration relevant to video use.