Canon 500mm F4 IS USM L 11 and Canon 600mm F4 IS USM L 11 lenses. The Canon 300mm F2.8 IS USM L 11, Canon 400mm F2.8 IS USM L 11. The Canon Lens Wide Strap B is designed to fit. The wide strap is made from a tough, strong fabric and features the white Canon logo.
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