SIGMA has just announced the new 10-18mm F2.8 DC DN, touted as the world's smallest, lightest ultra-wide APS-C zoom lens for the L-Mount, Sony E-mount and Fujifilm X-Mount. It has also announced development of the new full-frame 70-200mm F2.8 DG DN OS sports lens. The former will be available on October 26, and the latter in December this year.