Sigma’s newly upgraded 17–70mm f/2.8–4 DC Macro OS HSM lens features the company’s optical stabilization (OS) anti-shake technology that allows the use of shutter speeds approximately four stops slower than would otherwise be possible.
With the enhancements, Sigma has made it possible for Pentax and Sony shooters to utilize an anti-shake system in either the lens or the camera body.
“Aside from the OS technology, which is key when shooting with mid-range and high-end class DSLRs, this lens stands apart from the crowd because of its impressive zoom range,” said Mark Amir-Hamzeh, general manager, Sigma Corporation of America. “It has a 4x zoom range that is equivalent to 24–105mm lenses in full-frame formats. That, coupled with the OS technology and a macro function, makes it the ultimate standard lens for serious photographers who want top-notch image quality and functionality at an affordable price.”
With a large aperture of f/2.8 on the wide end and f/4 at the tele end, as well as a minimum focusing distance of 8.7 inches and a maximum magnification ratio of 1:2.7, the lens is geared for a variety of photography. Also featured are a hyper sonic motor, for quiet, high-speed autofocus, and its seven-blade diaphragm that creates an attractive blur to the out-of-focus areas to optimize the Bokeh effect.
An inner focusing system eliminates front lens rotation, making the lens suitable for use with the supplied petal-type lens hood and circular polarizing filters. Additionally, three aspherical lenses and one extraordinary-low dispersion glass element provide correction for all types of aberrations, while a super multilayer coating helps reduce flare and ghosting.
Sigma’s 17–70mm f/2.8–4 DC Macro OS HSM lens is available in Sigma, Canon, Nikon (D), Sony (D) and Pentax mounts for an MSRP of $680. sigmaphoto.com