I rented this lens for a few weeks to photograph wildlife in Montana and Yellowstone. This was the first lens I've used in the 500mm focal range, and I used a monopod to support the weight because it's at least 5 pounds. I played around with shutter speeds to end up with a sharp image. Of course, anything faster than 1/750 worked fine. With the monopod, I felt OK dropping it to 1/600, bu...

Sigma's 10-20mm F4-5.6 EX DC HSM lens allows enjoyment of super wide-angle photography and it is a very powerful tool for indoor shooting and landscape photography with APS-C size image sensors of digital SLR cameras. The wide angle of view ranges between 102.4-degrees at 10mm and 63.8-degrees at 20mm, which offers the photographer greater freedom of expression. It has a minimum focusing dis...