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Canon 70-300mm f/4.5-5.6 Diffractive Optics IS USM EF Mount Lens {58} at KEH Camera
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Multi-layer Diffractive Optical Element - Canon Europe
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Canon EF 70-300mm f/4.5-5.6 IS USM Diffractive Optics Camera Lens #T00708 | eBay
Canon 70-300mm DO IS Review
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