Sigma 28-70mm f/2.8 DG DN Contemporary Lens for Sony E

The Sigma 28-70mm f/2.8 DG DN Contemporary Lens for Sony E-Mount is a versatile zoom lens that offers a wide-angle to portrait-length range with a constant f/2.8 maximum aperture. It is designed to provide excellent performance in various lighting conditions while offering control over depth of field. This lens is more compact and lightweight compared to similar 24-70mm lenses. Its advanced optical design includes two FLD and two SLD low-dispersion elements, as well as three aspherical elements, resulting in high sharpness, enhanced clarity, and improved color accuracy. The lens features a single lightweight focusing element and a quiet, fast stepping motor, ensuring responsive and near-silent autofocus performance, making it ideal for filmmakers using gimbals or other accessories.

The lens incorporates Super Multi-Layer and Nano Porous coatings on each optical surface to suppress lens flare and ghosting, improving contrast and color rendering while maximizing light transmission. The front optic is treated with a water- and oil-repellent coating to resist smudges and droplets. The weather-sealed design of the lens makes it suitable for challenging environmental conditions, and its nine-blade rounded diaphragm produces a pleasing bokeh when using wider apertures.

Key Features:
– Standard zoom lens for full-frame Sony E-mount mirrorless cameras.
– Equivalent to a 42-105mm focal length on APS-C cameras.
– Constant f/2.8 maximum aperture for low-light situations and depth-of-field control.
– Two F Low Dispersion (FLD) and two Special Low Dispersion (SLD) elements minimize chromatic aberrations and color fringing.
– Three aspherical elements control spherical aberrations and distortion.
– Super Multi-Layer and Nano Porous coatings reduce lens flare and ghosting while enhancing contrast and color accuracy.
– Integrated stepping motor and optimized AF algorithm ensure quick and quiet autofocus performance.
– Minimum focus distance of 7.5″ at 28mm and 15″ at 70mm, with magnification ratios of 1:3.3 and 1:4.6, respectively.
– Rounded nine-blade diaphragm for pleasing bokeh.
– Brass bayonet mount for precise mounting and increased rigidity.
– Rubber sealing provides dust- and splash-resistance.