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Specifications for the EF 16-35mm f/2.8L USM Though the previous model received high praise from professional users, the recent proliferation of digital cameras, which have smaller image sizes than regular 35mm cameras, created a necessity for wide-angle lenses with an even shorter focal length. In response, the new EF16-35mm f/2.8L USM achieves a shortened focal length of 16 mm , producing the widest-angle range in its class and allowing users of digital AF SLR cameras to achieve the ultra-wide zoom ranges of conventional cameras.
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