Sigma 28-70mm f/2.8 DG DN Contemporary Lens for L-Mount

Sigma 28-70mm f/2.8 DG DN Contemporary Lens for L-Mount Overview

The 28-70mm f/2.8 DG DN Contemporary Lens for L-Mount from Sigma is a versatile wide-angle-to-portrait-length zoom with a constant f/2.8 maximum aperture. The design suits working in available lighting conditions while affording increased control over depth of field. More lightweight and compact than similar 24-70mm lenses, its 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. It features just one lightweight focusing element, which keeps the AF unit small. This, along with a quiet and fast stepping motor, makes for responsive and near-silent autofocus performance, an ideal combination for filmmakers looking for a high-performance, lightweight, and easy-to-handle camera system that works well with a gimbal or other accessories.

Each optical surface features Super Multi-Layer and Nano Porous coatings to improve contrast and colour rendering by suppressing lens flare and ghosting for optimal light transmission, and an added water- and oil-repellent coating on the front optic helps keep the lens free from smudges and droplets. The weather-sealed design benefits working in trying environmental conditions, and a nine-blade rounded diaphragm contributes a pleasing bokeh quality when using wider apertures.

Focal Length 28 to 70mm

Maximum Aperture f/2.8

Minimum Aperture f/22

Lens Mount L-Mount

Lens Format Coverage Full-Frame

Angle of View 75.4° to 34.3°

Minimum Focus Distance 7.5" / 19 cm

Maximum Magnification 4.6x

Optical Design 16 Elements in 12 Groups

Diaphragm Blades 9, Rounded

Focus Type Autofocus

Image Stabilization No

Filter Size 67 mm (Front)

Dimensions (ø x L) 2.8 x 4" / 72.2 x 101.5 mm Length at Maximum Extension 4.97" / 126.3 mm

Weight 16.6 oz / 470 g