As explained earlier, the primary cause of blurry pictures or videos by a webcam is the dirty camera lens. If the lens of your webcam is dirty, clean it with a soft lint-free cloth. This will fix ...

Sigma has uncovered an autofocus glitch on some serial numbers of the Sigma 24-70mm f/2.8 DG DN II Art lens. On Thursday ... apologized for the error, offering a free fix from Sigma Service ...