Canon 100 400 Telephoto USM Zoom Lens
The Canon 100-400mm telephoto zoom lens is a L type lens with image stablization technology which helps to elimiate camera shake blurring and is equivalent to two shutter speed steps. The USM mechanism makes focusing virtually silent.
The sharpness and contrast achieved with the lens is quite simply incredible. It's easily possible to pick out details in your photograph from miles away and determine the gender of people.
Up close the lens gives superb nature shots of flowers and insects and has a closest focus distance of 1.8 metres.
Shooting at slow shutter speeds is now excellent thanks to the (IS) Image Stabilisation technology which can make shots which previously required a tripod able to be shot without.
The lens is quite heavy and larger than a lot of lower cost lenses available but the quality does make up for these drawbacks.