We can only confirm they power on and perform basic functions unless stated otherwise.
Canon Extender FD 2x-B 2x Teleconverter OPTICS CLEAR vintage
2X Teleconverter T Mount 2X Magnification Lens Converter Low Chromatic
2x Teleconverter for Digital 650-1300mm 420-800mm 900mm
[UNUSED in Box] PENTAX REAR CONVERTER-A 645 2X Teleconverter Lens From JAPAN
Vintage Fujica 2x Teleconverter for 1980s Fujinon Lenses - Fujica Bayonet Mou...
2X Teleconverter for T2 650-1300mm 900mm 420-800mm Telephoto
![[UNUSED in Box] PENTAX REAR CONVERTER-A 645 2X Teleconverter Lens From JAPAN](https://images.buynet.work/thumb.php?i=389824563&s=240)
