This standard zoom lens is designed exclusively for digital SLR cameras and incorporates Sigma's original OS (Optical Stabiliser) function. This lens offers a large aperture of F2.8 at the 18mm focal length making it ideal for indoor photography and in low lighting conditions. Two SLD (Special Low Dispersion) glass elements and three aspherical lenses provide excellent correction for all types of aberrations. High image quality is assured throughout the entire zoom range. The incorporation of HSM (Hyper Sonic Motor) ensures a quiet and high speed AF. The Super Multi-Layer Coating reduces flare and ghosting and provides high contrast images. This lens has a minimum focusing distance of 30cm (11.8 inches) throughout the entire zoom range and a maximum magnification ratio of 1:4.1 making it ideal for close-up photography.

Two SLD (Special Low Dispersion) glass elements and three aspherical lenses provide excellent correction for all type of aberrations. High image quality is assured throughout the entire zoon range.

This lens offers a large aperture of F2.8 at the 18mm focal length. This large aperture provides a bright image through the viewfinder and enables photographers to easily check focusing and composition. The near circular diaphragm creates an attractive blur to the out-of-focus areas which enables photographers to emphasise the subject.

This lens is equipped with Sigma's own unique OS function. This system allows the photographer to use shutter speeds approximately 4 stops slower than would otherwise be possible whilst still eliminating camera shake. For Sony and Pentax mounts, the built-in OS function of this lens can be used even if the camera body is equipped with an anti-shake function. As compensation for camera shake is visible in the viewfinder, the photographer can easily check for accurate focus and ensure there is no subject movement.
· It is not possible to use the built-in OS function of this lens when using with Pentax ist* series and K100D DSLR cameras.

• 16 Elements in 12 Groups

• 69.3 - 27.9 degrees

• 7 Blades

• F22

• 30cm

• 1:4.1

• 67mm

• Diameter 74mm X Length 88.6mm

• 395g