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Specifications for the EF 28-300 f/3.5-5.6L USM Featuring a new optical design, the lens makes possible a minimum focusing distance of just 0.7 meters throughout the entire zoom range. Other features include a circular diaphragm for improved background blur, and a hardy water and dust-resistant construction, ensuring professional users unfailing performance under even the most grueling of conditions. And, in consideration of the environment, the model uses only lead-free glass elements.
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