Summary: No it doesn't have Image Stabilization. Yes it is difficult to shoot @ 400mm for the first time. I have to shoot at least 1/400 and usually try to shoot 1/640. Autofocus is noisy but usable. It's a well thought out lens - with a zoom lock @ 80mm, included hood and bag and a decent tripod mount. For the 350 i picked this lens up it's an incredible value.
Summary: I am into bird photographer being a birder most of my life. I know that to get a good birding shot you need a bit more zoom than a 300mm....which is why I didn't buy the usual Canon 70-300mm. I purchased this zoom for several reasons. First was the weight and size. Although extremely well constructed this lens is not all that heavy for a zoom 400 (36oz) which is important since I am hiking in the backwoods all time and every ounce helps.The size of this lens fully...
Summary: This is my second Tokina lens I purchased for my D-80 (the other is their 12-24 mm) and once again I am very pleased. I bought this lens for two reasons: 1. The relative small size for such a large focal range and 2. price. I just returned from a three week trip to Africa and this lens performed superbly. The construction is solid and the quality of pictures, especially when using the hood that comes with the lens, was better than expected.
Summary: The first thing you notice about the Tokina when you open the box is the build quality. The lens is solid and built like a tank. The construction leads to a heavier weight which may be an issue for some, but with the included tripod/monopod attachment collar it should not be a big issue for most users.My primary use for the lens will be wildlife/birding as well as aviation photography.
Summary: Very sharp, reasonably priced reasonably fast lens. Bought for use with 30D, gives me better than 600mm reach at the weight and size of a short zoom. Polarizer adjuster built into the lens hood, so you don't need to remove the hood. Problems Encountered: Not terribly fast focusing. Previous Equivalent Items Owned: Sigma 50-500.