This Nikon Sigma EX DG OS 70-200 mm f/2.8 lens uses optical image stabilization over four of its f-stops. This Nikon camera lens also features a hyper-sonic motor or HSM. Additionally, with this system the photographer can concentrate on framing and tracking the image's subject while the camera rapidly and silently focuses for optimal depth of field and image clarity. Using this lens's manual override, the photographer can always select the correct level of focus independently of the viewfinder's tendency. With this Nikon Sigma EX DG OS's focal length range of 70-200 mm, this Nikon camera lens can capture images with exceptional clarity from middle distances all the way out to very long distances. This Nikon Sigma EX DG OS 70-200 mm f/2.8 lens can effectively magnify the image's subject by a factor of 1.5x. With its minimum aperture of f/22 and its maximum aperture of f/2.8, this lens is capable of handling any level of light from indoors and night time light all the way up to broad daylight.