Sigma 120-400mm f/4.5-5.6 DG OS HSM lens
Introduction The '''Sigma APO 120-400mm F4.5-5.6 DG OS HSM lens''' is a super-telephoto lens produced by Sigma Corporation. It contains three SLD (Special Low Dispersion) glass elements to provide  correction for chromatic aberration. It is aimed toward advanced consumers.
See also *List of Nikon compatible lenses with integrated autofocus-motor
References
External links