Get close to distant subjects and scenes with this Canon EF 5176B002 200-400mm IS USM super telephoto lens, which is compatible with most Canon EOS SLR cameras and features a built-in 1.4x extender that offers shooting versatility.
Although this lens is expensive, it is probably the best lens I own for wildlife photography. It is fast, and sharp...snappy, and it is light enough that for the occasional "grab shot" I can hand hold it steady enough to get good images. I also love the fact that the 1.4 converter is built right into the lens. That offers the maximum flexibility in shooting and it is one less piece that needs to be taken off. I have far fewer dust issues because of that. Great lens!