Sigma has announced a second-generation version of its full-frame 35mm F1.2 'Art' lens, after teasing that it was coming ...

Hot on the heels of the stabilized 200mm F2, Sigma is releasing another first for mirrorless systems: the 135mm F1.4 DG Art.

Based on in-depth interviews with nine Douyin users, this study investigates how “positive energy” short videos are interpreted and practiced in users’ everyday processes of viewing, evaluating, ...