Sigma 28-70mm f/2.8 DG DN for Sony E The Sigma 28-70mm f/2.8 DG DN for Sony E for Sony E-Mount from Sigma is a versatile wide-angle to portrait-length zoom characterized by its f/2.8 constant maximum aperture. The design of the Sigma 28-70mm f/2.8 DG DN for Sony E suits working in available lighting conditions while affording increased control over depth of field. More lightweight and compact than similar 24-70mm lenses, the optical design of the Sigma 28-70mm f/2.8 DG DN for Sony E 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 color accuracy. Sigma 28-70mm f/2.8 DG DN for Sony E 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 color 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 Sigma 28-70mm f/2.8 DG DN for Sony E 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. Standard zoom for full-frame E-mount mirrorless cameras Sigma 28-70mm f/2.8 DG DN for Sony E has 42-105mm equivalent focal length when used on an APS-C camera The Sigma 28-70mm f/2.8 DG DN for Sony E has a constant f/2.8 maximum aperture for Low light use and depth-of-field control The Sigma 28-70mm f/2.8 DG DN for Sony E has two F Low Dispersion (FLD) and two Special Low Dispersion (SLD) elements which reduce chromatic aberrations and color fringing The Sigma 28-70mm f/2.8 DG DN for Sony E has three aspherical elements control spherical aberrations and distortion Sigma 28-70mm f/2.8 DG DN for Sony E comes with both Super Multi-Layer and Nano Porous coatings which minimize lens flare and ghosting and produce contrast-rich and color-neutral imagery Sigma 28-70mm f/2.8 DG DN for Sony E has an integrated stepping motor and optimized AF algorithm that provides quick and quiet autofocus Sigma 28-70mm f/2.8 DG DN for Sony E has 28mm minimum focus distance: 7.5", 1:3.3 magnification Sigma 28-70mm f/2.8 DG DN for Sony E has 70mm minimum focus distance: 15", 1:4.6 magnification The Sigma 28-70mm f/2.8 DG DN for Sony E has a rounded nine-blade diaphragm for a pleasing bokeh quality Sigma 28-70mm f/2.8 DG DN for Sony E has a brass bayonet for mounting accuracy and rigidity Sigma 28-70mm f/2.8 DG DN for Sony E comes with a rubber sealing for dust- and splash-resistance
