Auto Focus AF Adapter for CanoEOS EF Lens to Fuji GFX Cameras, GFX50,50S,100,100S

This adapter never worked well from the beginning, but unfortunately I've now missed my chance to return it. Upon receiving it, it didn't work properly with a Rokinon Canon EF mount lens. I was able to downgrade the firmware and get it to work, but it now didn't have some of the features of the new firmware that I wanted to use with my Sigma Canon EF mount lenses. I recently saw that they released a new firmware update and thought I'd give that a try. Upon updating to that version, I lost functionality of the Rokinon lens again AND NOW I am unable to downgrade to the previous firmware that worked. I've tried reaching out to the company via their FB page and support email address and have not heard back from them. At the moment, I am stuck with a $500+ paperweight. Please keep in mind this isn't my first time using a lens adapter, I've used Metabones and Fotodiox adapters successfully for years on Sony FE cameras...

Seems to work great! I’ve had it for about 3 months. I would say you should make sure your EF lenses have clean contacts. I had an issue with the camera not picking up on the digital info and was not firing. I detached the lens, wiped it and then reattached it. Everything went back to normal!