TAMRON SP FLAT-FIELD 2× TELE-CONVERTER 01F This is the TAMRON 2x teleconverter SP01F from the Adaptall 2 era. When attached to the TAMRON SP 90mm F2.5 52B, it can be used as a 1:1 macro lens. [Exterior] Overall in beautiful condition, but there are some minor blemishes on the mount. This does not affect use. [Optics] Overall clear optics. There is some minor dust that does not affect the image quality. There are some faint cleaning marks on the rear element. *Please read the profile before purchasing. *Since this is an inspection by an amateur, there may be some defects that I have not noticed. I will respond to any questions, so please feel free to ask. [Important] If you wish to lower the price, please be sure to include your desired price. Also, if the price is not agreeable and you are unable to purchase, please be sure to reply. I will not respond to silent price reduction requests using the price reduction request function. I am having trouble with many frivolous price reduction requests, so if you do not follow these instructions, you may be blocked.