A teleconverter lens that can extend the focal length simply by attaching it between the camera and the lens. Achieves a 180% improvement in resolution compared to conventional models thanks to a newly designed optical design. Equipped with electronic contacts, so EXIF information such as F-number and focal length can be converted and transmitted. AF operation is only possible when using lenses brighter than F2.8. Attaching it to a macro lens allows for macro photography at greater than 1:1 magnification. I have used it a few times, but I no longer have the opportunity to use it, so I am selling it. Body only. The condition is clean, but there may be minor scratches. Please understand that this is a used item.