Learn about lens creep, why I buy lenses refurbished, what focus searching means, what USM stands for, how to find the minimum focus distance on your lens, and much more! This practical little video compares three Canon lenses, the 75-300mm f/4-5.6, 70-200mm f/4 L IS, and 70-200mm f/2.8 L IS, to help us know what to look for before buying a new lens.

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