City streets can be cramped locations for shooting. So when it's time to take that corporate HQ shot for the annual report, you'll be happy this Sigma Photo 10-20mm f/4-5.6 ultra wide-angle zoom lens is locked in place on the front of your APS-C SLR. With a 102-degree angle of view at full wide, this lens will get an awful lot into the frame. Your shot will be crystal-clear, with an arresting perspective. This is an ideal choice for landscape and portrait photographers who want to explore a more adventurous depiction of space.