Sigma 80-400mm F4.5-5.6 EX OS
Launched 2002

A function that compensates for camera movement employing Sigma’s own technology.
Using Sigma’s original OS (Optical Stabilizer) function, two types of sensors inside the lens detect vertical and horizontal movement of the camera.

Two types of camera-shake compensation modes to handle all types of shooting conditions.
In Mode 1, the system detects and compensates for vertical and horizontal movement of the camera; ideal for still-image photography. And in Mode 2, the system detects and compensates for vertical movement of the camera; ideal for motor sports and other situations where panning may be desired.

Rear focus, zoom lock switch and other features.
A circular polarizing filter can easily be used because of our rear-focusing system, in which the front lens group does not rotate during focusing. A zoom lock switch is built in to prevent the lens from extending due to its own weight. Two SLD (Special Low Dispersion) glass elements in the front lens group and one in the rear lens group means the lens has excellent correction of chromatic aberration and delivers high-definition performance. Full-time manual focus is also available.