Photography is certainly not an art form to be done on the cheap, and the super-telephoto lens is one of the most expensive pieces of equipment the wildlife photographer will own.
While they have many features that make them ideally suited for the wildlife and outdoor photography trade, perhaps one of the best is the concept of Image Stabilization Sharpness. Both Canon and Nikon make lenses with this feature, designed to restrict vibration and keep the lens in place while shooting. The result is that shutter speed is increased a full two to four stops with this technology.
When is having Image Stabilization important? The optimal times for shooting wildlife are at the beginning and the end of the day (dawn and dusk), and having the ability to shoot at these slower speeds means the amount of time a photographer can spend shooting is increased. While the cost of these lenses may at times border on the obscene for the amateur photographer, the old phrase "you can't buy time" has perhaps found an exception.
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