The Sigma AF 28-70mm f/2.8 DG DN Contemporary is a high-performance standard lens designed for Sony E-mount (FE) and L-Mount cameras. Its lightweight and compact design makes it an ideal choice for everyday use with mirrorless cameras. This lens features a focal length of 28-70mm with a minimum focusing distance of 19 cm, and a 9-blade diaphragm with a maximum aperture of f/2.8. Weighing just 470 grams and measuring 102x72 mm, it incorporates a stepper motor for autofocus, an optical configuration of 16 elements in 12 groups, and a 67mm filter thread.