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This compact high zoom ratio lens is designed exclusively for digital
SLR cameras and incorporates Sigma’s original OS function. This
system uses two sensors inside the lens to detect vertical and horizontal
movement of the camera and works by moving an optical image stabilizing
lens group to effectively compensate for camera shake. It offers the equivalent
of using a shutter speed approximately 4 stops faster.
It is the ideal lens for several type of photography such as wide-angle,
telephoto and close-up. SLD (Special Low Dispersion) glass, a molded glass
aspherical lens and two hybrid aspherical lenses provide excellent correction
for all types of aberrations.
An inner focusing system provides high performance and convenience. The
non-rotating lens barrel perfectly suits the matched petal-type lens hood
(supplied) and circular polarising filters.
This lens incorporates HSM (Hyper Sonic Motor), which ensures a quiet
and high-speed AF as well as full-time manual focusing capability.
A zoom lock switch mechanism is provided to prevent the lens from creeping
due to its own weight.
