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Continue to ChatCanon EF 100-400 f/4-5.6L IS Patent Pending https://www.canonrumors.com/canon-ef-100-400-f4-5-6l-is-patent-pending/
Canon EF 100-400 f/4-5.6L IS Patent Pending https://www.canonrumors.com/canon-ef-100-400-f4-5-6l-is-patent-pending/