Sigma 18-50mm F2.8

18-50mm F2.8-4.5 DC OS HSM Lens for Canon SLR camera (Ref: 861954) Sigma's 18-50mm F2.8-4.5 DC OS HSM lens isdesigned for digital SLR cameras and offers a large aperture. Its large apertureof F2.8 (at 18mm) lets through a maximum amount of light, making it the idealcomplement to your camera.  This 18-50mm lens is perfect for taking shots indoors and in all sorts of weather conditions...