B00R1WSVMY High-Power 500mm/1000mm f/8 Manual Telephoto Lens for Sony Alpha A99, A77, A65, A58, A57, A55, A37, A35, A33, A900, A700, A580, A560, A550, A390, A380, A330 and A290 Digital SLR Cameras

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Includes T-mount adapter for digital and 35mm Sony Alpha A-Mount SLR cameras
High index, low-dispersion multi-coated optical glass to reduce flare
2X Teleconverter doubles the power of your lens to 1000mm.
Filter thread: 67mm