It’s billed as the first zoom lens ever to achieve a large maximum aperture of f/1.8 throughout the entire zoom range. The ultra-compact Sigma 18-35 mm f/1.8 DC HSM zoom lens is the newest addition to Sigma’s Art line of lenses.
Designed for APS-C format cameras, this standard zoom lens offers an equivalent focal range of 27-52.5 mm.
Art line lenses are designed with an emphasis on artistic expression to meet the expectations of users who value a creative, dramatic outcome above compactness and multifunction.
The lenses are said to offer sophisticated optical performance for landscapes, portraits, still-life, close-up and casual snaps.
Sigma has utilized glass-molded aspherical lenses and Special Low Dispersion (SLD) glass elements to compensate for various distortions, such as spherical, axial chromatic, and astigmatic aberration, along with curvature of field at the widest angles.
Optimal handling is achieved using internal focusing and zooming systems that prevent any change in the length of the lens during operation. Additionally, the front of the lens doesn’t rotate.
Advanced optical design and Sigma’s Super Multi-Layer Coating reduces flare and ghosting and provides sharp, high-contrast images, even in backlit conditions.
The lens has a minimum focusing distance of 28 cm and a maximum magnification ratio of 1:4.3.
The Hyper Sonic Motor (HSM) ensures quiet, high-speed autofocusing, as well as full-time manual focus override by rotation of the focus ring. An enhanced AF algorithm is said to deliver smoother autofocusing. Full-time manual focus is also possible.
Other features: 9-blade rounded diaphragm; brass bayonet mount; optional USB Dock for lens firmware updating.
The Sigma 18-35 mm f/1.8 DC HSM lens has a suggested retail price of $879.95 and will be available for Canon and Sigma at the end of July, followed by Nikon in August.