sigma

I'm photographing wildlife as a hobby for about 6 years now and before this lens I used the regular 70-300 zoom lens and due to budget I could'nt buy any of the brand's telephotos until I found this lens ,at first I was suspicious because it seems too cheap for a 500mm lens but this was before I received my first photos and transparencies from the lab because it turned out to be way better than I could ever imagine, the photos were great, very nice color and contrast, not to mention the depth of field of a telephoto which is very shallow and makes the main object very strong ,the image comes with a very nice blurred background and a very shrp main objects ,image wise this lens is very good (not only for the price range )and the only drawback is the slow auto focus . Anyway, this lens forces the use of a sturdy tripod so you should take it in account. after about a year with this lens I can say that I'm more than satisfied ,there is no match for it in the price range