Sigma has announced the release of a new extended zoom lens in the 18-250mm F3.5-6.3 DC OS HSM 13.8:1. This new extended zoom lens boasts of a Hybrid Optical Stabilization and Hyper-Sonic Motor. The Hybrid Optical Stabilizer, an anti-shake system providing image stabilization in both the camera body and viewfinder for Pentax, and Sony is ...