Use: Landscape, Portrait, Sport, Travel The F2.8 zoom lenses are essential for most professional photographers. Above all, 70-200mm F2.8 lenses are expected to deliver their full potential in a wide variety of challenging subjects, from reportage to sports and scenery to portraits. The SIGMA 70-200mm F2.8 DG OS HSM | Sports has a high optical quality, a robust design and excellent handling characteristics that professional photographers and demanding amateurs need.