Full frame zoom lens from Sigma is an interesting alternative to the more expensive models of camera manufacturers.
A Sigma 12-24 mm f / 4 DG HSM is an interesting zoom with a relatively bright light, which is designed for cameras with full frame, and will be available for different fastening systems. Thanks to the largest in the history of aspherical lens (among the offered wide-angle lenses), SIGMA's engineers eliminated the phenomenon of distortion to almost zero. The front aspherical lens has a diameter of 80mm, but such a solution can guarantee the picture quality worthy of the prestigious line ART.for the correction of defects in color correspond to a lens made of glass with a low dispersion, eg glass with properties similar to fluorite. The lens uses one aspherical lens and SLD glass until 5 of fluorite lenses. So complicated optical system guarantees the liquidation of any color aberration and coma phenomenon in the entire cross-section of the frame. The lens offers a constant F4 aperture throughout the zoom range. It uses an enhanced motor HSM, and the focus is set to 30% faster than the drives found in older models lenses. The brass bayonet mounted rubber gasket increasing resistance to splash and work in dusty conditions. Lens mount Canon and Sigma converter is compatible with the MC-11, so that users cameras Sony E will also be able to use it in their work. The models mount Nikon uses electromagnetic control mechanism iris. The price of the lens will be announced shortly. Availability: October / November 2016.