Standard zoom lens with a focal length of 18-35mm (equivalent to 27-52.5mm on a 35mm format)
Maximum Aperture Value of f/1.8
HSM (Hyper-sonic Motor)
DC lens designed for the smaller image circle of APS-C DSLR camera
Special Low Dispersion (SLD) elements
Thermally Stable Composite (TSC) materials
9-blade circular aperture diaphragm
17 elements arranged in 12 groups
Angle of view 76.5 û - 44.2 û
18-35mm f/1.8 DC HSM Zoom Lens
18-35mm f/1.8 DC HSM Zoom Lens is ideally suitable for landscapes, however because of the crop factor on APS-C DSLRs, the lens has a 35mm equivalent focal length of 27-52.5mm and thus works well as a general purpose lens for everyday photography. The bright f/1.8 aperture is suitable for fast moving subjects like a playful child or a pet playing in the yard. The lens also incorporates a number of other features such as the use of Thermally Stable Composite (TSC) materials in construction, HSM (Hyper-sonic Motor) for silent auto-focusing, Special Low Dispersion (SLD) to counter aberrations and a 9-blade circular aperture diaphragm.
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.
USB Dock Compatibility
Sigma has developed special software (SIGMA Optimization Pro) that can update the lens firmware and adjust parameters such as focus.
17 Elements in 12 Groups
Angle of View (SD1)
Number of Diaphragm Blades
Minimum Focusing Distance
28 cm/ 11.0 in
Filter Size (mm)
Dimensions (Diameter x Length)
78mm x 121.0mm/3.1in. x 4.8in.