Focal length of 18-35mm (27-52.5mm on a 35mm format equivalent)
Fast constant aperture of f/1.8
DC lens designed for the smaller image circle of APS-C DSLRs
HSM (Hyper-sonic Motor) technology for quieter auto-focusing
Wide glass molded aspherical lens element plus Special Low Dispersion (SLD) element
(IF) Internal Focusing
Thermally Stable Composite (TSC) for stable internal components in extreme temperatures
9-blade rounded aperture diaphragm
17 elements arranged in 12 groups
18-35mm f/1.8 DC HSM Zoom Lens
18-35mm f/1.8 DC HSM Zoom Lens covers a standard perspective of 18-35mm (35mm format equivalent of 27-52.5mm) and yet has an incredible maximum aperture of f/1.8. Ideally suitable for portraits, wedding, landscape and other everyday photography requirements the lens has HSM (Hyper-sonic Motor) for quieter auto-focusing, Internal Focusing mechanism for a non-extending barrel and Thermally Stable Composite (TSC) technology for stable internal components even when shooting in extreme temperatures. To round off, the other features of the lens include a 9-blade circular aperture diaphragm, a wide glass molded aspherical element and Special Low Dispersion (SLD) elements.
Truly a revolutionary product, the Sigma 18-35mm 1.8 DC HSM is the first wide-angle to standard zoom lens to achieve a large aperture of 1.8. Designed specifically for APS-C sized sensors, the Sigma 18-35mm 1.8 translates to 27mm-52.5mm on 35mm camera. Tapping into SigmaÕs long history of lens innovations, the 18-35mm 1.8 DC HSM incorporates a wide glass molded aspherical lens with Special Low Dispersion (SLD) glass to compensate for aberrations and curvature at the widest angle. Internal focusing and zooming allows for more usability and functionality. The 18-35mm is ideal for landscapes, portraits, still life, snap shots, casual, and close-ups and the Hyper Sonic Motor (HSM) ensures smooth, fast and accurate autofocusing. The use of Thermally Composite Material (TSC) reduces size and weight but increases the lens durability. Its new Global Vision design works with its compatibility with the Sigma USB dock for further customization. A 9 blade rounded diaphragm also creates beautiful background blur. The Sigma 18-35mm 1.8 DC HSM is a new benchmark in photographic history and a must have for every camera bag.
17 Elements in 12 Groups
Angle of View (SD1)
Number of Diaphragm Blades
Minimum Focusing Distance
28 cm/ 11.0 in
Filter Size (mm)
(Diameter x Length)
78mm x 121.0mm/3.1in. x 4.8in.
HSM -Hyper-Sonic Motor
DC - DC for Digital
* The appearance, specifications, and the like of the product are subject to change for improvement without notice.
Front & rear lens