Distinguished by a uniquely fast and versatile design, the Canon EF-mount Sigma 18-35mm f/1.8 DC HSM is an Art-series zoom, covering wide-angle to normal focal lengths. Separating itself from the pack, this zoom features an exceedingly bright f/1.8 constant maximum aperture, which suits its use in difficult lighting conditions and offers impressive depth of field control throughout the zoom range. The optical design incorporates a series of SLD and aspherical elements, which help to achieve high clarity and sharpness by suppressing various aberrations, color fringing, and distortion. A Super Multi-Layer Coating has also been applied, too, which controls lens flare and ghosting for improved contrast and color accuracy. Balancing the optical merits, this 18-35mm also sports an advanced Hyper Sonic Motor, along with an internal focusing design, to promote fast, quiet, and precise autofocus performance.
| Focal Length | 18 to 35mm (35mm Equivalent Focal Length: 28.8 to 56mm) |
| Maximum Aperture | f/1.8 |
| Minimum Aperture | f/16 |
| Lens Mount | Canon EF |
| Format Compatibility | APS-C |
| Angle of View | 76.5° to 44.2° |
| Minimum Focus Distance | 11.02" / 28 cm |
| Maximum Magnification | 0.23x |
| Macro Reproduction Ratio | 1:4.3 |
| Optical Design | 17 Elements in 12 Groups |
| Diaphragm Blades | 9, Rounded |
| Focus Type | Autofocus |
| Image Stabilization | None |
| Filter Size | 72mm (Front) |
| Dimensions (ø x L) | 3.07 x 4.76" / 78 x 121 mm |
| Weight | 1.78 lb / 810 g |
