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When would you use a 300mm lens?

Most lenses with a focal length of more than 200mm are commonly used for shooting sports and wildlife. A long telephoto lens -- in conjunction with a large aperture -- also ha (MORE)

Will any Canon lens fit any Canon camera?

No. The three primary types of Canon lens, and some commentary on compatibility, are below.   * Canon FD and FL lenses: These are all manual-focus lenses for manual-focus (MORE)

What is the best canon zoom camera lens?

The Canon EF 70-300mm DO IS USM Lens is (arguably) the best Canon EF lens available. It has a focal length of 70-300mm which is excellent for sports and wildlife photography. (MORE)