500mm F/6.3 Mf Telephoto Mirror Lens +2x Teleconverter =1000mm For Nikon Canon Sony Dslr Camera And Macro 4/3 Mirroreless Camera - Camera Lenses - AliExpress
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Rokinon 500mm f/6.3 Multi-Coated Mirror Lens with 2x Teleconverter (=1000mm) + Tripod + Nikon Case + Accessory Kit for Nikon D3100, D3200, D5100, D7000, D700, D800, D4 Digital SLR Cameras Reviews 2023