SIGMA LENS 18-35/1.8 DC HSM CANON ARTA large aperture fixed focal length lens is great for achieving expressive bokeh effects and enjoying ultra high optical performance. On the other hand, photographers often need to change the angle of view to properly capture the scene that presents itself. To solve this decades long dilemma, SIGMA proudly introduces the 18 35mm F1. 8 DC HSM next generation large aperture APS C format standard zoom lens for digital SLR cameras. Taking on the challenge