Product Description
The 28-70mm f/2.8 DG DN Contemporary Lens 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 suits working in available lighting conditions
while affording increased control over depth of field. More lightweight and
compact than similar 24-70mm lenses, it's 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
color 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 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 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.
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