Interior rooms are difficult to shoot, because adequate light can be in short supply. So when it's time to get that sweeping shot of the living-room interior you just designed to use on your website, you'll be happy this Sigma Photo 10-20mm f/3.5 ultra-wide-angle zoom lens is locked in place on the front of your APS-C SLR. With its consistent maximum aperture throughout its zoom range, it's a great choice in subdued light. And, 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 also an ideal choice for landscape and portrait photographers who want to explore a more adventurous depiction of space.