Sigma posted its live stream in advance of the announcement of the Sigma 18-50mm f/2.8 DC DN | Contemporary on Tuesday, October 19th, 2021 EST 08:00.
Sigma “18-50mm F2.8 DC DN | Contemporary”
13 elements in 10 groups
minimum shooting distance 12.1cm (wide angle) / 30cm (telephoto)
maximum shooting magnification 1: 2.8( Wide angle) / 1: 5 (telephoto)
filter diameter 55mm
size φ65.4 × 74.5mm (E-mount version φ61.6×76.5mm)
weight 290g.