Sigma DG 170-500mm f/5-6.3 APO

Excellent Lens for the Range and Cost! Excellent lens for the range and price point, hard to beat it! It has its faults, like a little softer wide open on the long end, not as contrasty as more expensive lenses, and a slower AF (but not too slow). But it gives an excellent focal range for shooting in decent lighting conditions. I love mine!

Great deal for a low budget This glass is a great deal for it price. I’m an amateur photographer and love wildlife photography (specially avian). With this glass I get great images and enjoy every minute of it. I have a Nikon D5000, and although the glass is not fully functional (AF) with it, I’m practicing allot and saving battery power. I’ve found out (with my other lenses) that AF-S (photographing birds) have many problems focusing, stole time for great shots and eat my battery.

Nice 500mm thats not too heavy to pack outdoors Love this lens. This lens is actually lighter than my Nikon 200mm f2.8! Doesn't have stabilization or work as auto on my camera but is light enough to pack around and I have really taken some nice free handed shots with this lens. I am impressed with the pics I've taken with this lens in full 500mm. It feels almost too light and was worried about the quaility at first but the quaility is there and takes great pics. Very nice lens to use if you want to get wildlife closer and not break your arm. I recommend it highly.