High-Power 500mm/1000mm f/8 Manual Telephoto Lens for Nikon D7500, D500, D600, D610, D700, D750, D800, D810, D850, D3100, D3200, D3300, D3400, D5100, D5200, D5300, D5500, D5600, D7000, D7100, D7200 High-power 500mm telephoto focal length Includes T-mount adapter for digital and 35mm NIKON DSLR 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 The perfect combination of precision and ease of use High index, low-dispersion multi-coated optical glass to reduce flare Double the power of 500mm lenses, thanks to its 2X Teleconverter Built-in tripod collar for improved lens balance Increased compatibility with a great number of cameras and models T-mount adapter included!