Sigma 18-250mm F3.5-6.3 DC OS HSM SLR Black

18-250mm F3.5-6.3 DC OS HSM Sigma’s unique OS (Optical Stabiliser) technology
This lens is equipped with Sigma’s own OS function. This function uses two sensors inside the lens to detect vertical and horizontal movement of the camera and works by moving an optical image stabilising lens group to effectively compensate for camera shake. It also automatically detects movement of the camera and compensates for camera shake when shooting moving subjects such as motor sports.