The Korean website lcap.tistory.com published many sample images taken with the just announced Sigma 18-35mm f/1.8 DC HSM lens. The post also contains distortion, light fall-off and "starring" samples. The photos are taken with a Canon camera, but you can get an idea about the performance of the lens. Another post shows the lens coverage when used on a full frame camera (Canon 5D Mark II).
