Well, it's not cheap. And it won't be the best choice for sports photography unless you're outdoors with lots of light, but then I bought it for scenes for the range. It's surprisingly sharp, and considering the price is a lot lower than the 200-400, this lens performs very well. Like others, I think Nikon could have done something with the tripod collar as it's not the best part of this lens. You're going to need it, because unless you're shooting at high ISO at midday, this isn't quite the lens you'd normally hold in your hands. I've read that some pretty wordy people claim they shoot "perfect" at 400mm at 1/10th of a second. Sorry, it's either workload or dumb luck. Great lens for what it was designed for. By the way, others are right. The lens collar on this one just sucks. I've never snubbed Nikon but seriously guys you could do a better design. I spent the extra $100+ and replaced the factory with a Kirk.
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