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Amazon.com : Samyang 100mm F2.8 ED UMC Full Frame Telephoto Macro Lens with Built-in AE Chip for Nikon Digital SLR Cameras : Electronics
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Amazon.com : Rokinon 100mm F2.8 ED UMC Full Frame Telephoto Macro Lens with Built-in AE Chip for Nikon Digital SLR Cameras : Electronics
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