The Sigma 28-70mm f/2.8 DG DN Contemporary Lens for Leica L is a wide-angle to portrait zoom lens with a constant maximum aperture of f/2.8. Increased control of depth of field is offered while working in available light conditions.
The optical design incorporates two FLD and two SLD low-dispersion elements plus three aspherical elements that reduce a variety of aberrations to achieve high sharpness, enhanced clarity, and improved colour accuracy. The autofocus unit is kept small with just one lightweight focusing element.

The Sigma 28-70mm f/2.8 DG DN Contemporary Lens for Leica L features a quiet and fast stepping motor providing near-silent and fast autofocus. Providing the perfect combination for filmmakers looking for a high-performance, lightweight, and easy-to-handle camera system that works well with a gimbal or other accessories.
All-optical surfaces feature Super Multi-Layer and Nano-Porous coatings for better contrast and colour rendering for optimal light transmission.
Additionally, the Sigma 28-70mm f/2.8 DG DN Contemporary Lens for Leica L features a water- and oil-repellent coating along with the weather seal construction, this lens is perfect for any working condition.
Furthermore, a nine-blade rounded diaphragm contributes to a good bokeh quality when wider apertures are used.