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Canon EF 100-400mm f/4.5-5.6L IS II USM - camera lenses (Telephoto, SLR, 21/16, Auto, 4.5 - 5.6, 100 - 400 mm): Amazon.co.uk: Electronics & Photo
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Ron Martinsen's Photography Blog: REVIEW: Canon EF 100-400mm f/4.5-5.6L IS II USM Lens (SIGMA 120-300 & Canon 200-400 Compared)
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