Sigma 500mm f4 dg os hsm sigma
Super telephoto lens series sigma dg lens mount sigma sa lens speed 4 focal length 500 mm suitable for sensor types aps c full frame construction prime lens area of use animal photography sports photography image stabiliser image stabilisation system optical stabilizer os focus internal focus auto focus manual focus af motor ultrasonic motor usm circular aperture apochromatic max magnification 16 5 closest focusing distance 350 cm lens types