About this item •Completely old school, convert to manual control, manual focus and manual exposure, used on /Opteka 500mm, 420-800mm, 650-1300mm Telephoto Lens & Telescopes •T2 for Canon EF/EOS Mount, Compatible with Canon EOS Rebel T7, T7i, T6, T6i, T5, T5i, SL2, 80D, 77D, 700D, 70D, 60D, 50D, 5D, 6D, 7D, 600D, 550D, 200D, 150D, 100D, 1300D, 1400D, 1500D etc •T2 for Nikon F Mount, Compatihle with Nikon D850, D810, D800, D750, D700, D610, D3100, D3200, D3300, D3400, D5100, D5200, D5300, D5500, D5600, D7000, D7100, D7200, D7500, D50, D60, D90 etc •T2 for compatible with Sony A Mount, Compatible with Sony A99II, A99, A900, A850, A77 II, A77, A65, A58, A57, A55, A37, A35, A33, A700, A580, A560, A550, A450, A390, A380, A350, A330, A300, A290, A230, A200, A100 etc; T2-compatible with Sony E Mount, Compatible with Sony A9, A7S II, A7R II, A7S, A7R, A7 II, A7, NEX-7, NEX-6, NEX-5, NEX-5N, NEX-5R, NEX-5T, NEX-3, NEX-C3, NEX-F3, NEX-3N, A6500, A6300, A6000, A5100, A5000, A3000, QX1 etc •T2 for Olympus/compatible with Panasonic Micro 4/3 Mount ,Compatible with Micro 4/3 Mount Camera: compatible with Panasonic Lumix DMC-GH5, DMC-GH4, DMC-GM1, DMC-GX7,DMC-G6, DMC-GF6, DMC-GH3, DMC-G5, DMC-GF5, DMC-GX1, DMC-GF3, DMC-G3, DMC-GF2, DMC-GH2, DMC-G2, DMC-G10; Olympus: OM-D E-M10, OM-D E-M1, PEN E-P5, PEN E-PL5, PEN E-PM2, OM-D E-M5, PEN E-P3, PEN E-PL3, PEN E-PM1, PEN E-PL2, PEN E-PL1s, PEN E-PL3, PEN E-PM1, PEN E-PL2, PEN E-PL1s, PEN E-PL1, PEN E-P2