carstenkriegerphotography

I am starting to wonder if the GFX50R has some general problems with adapters. I was hoping to use my Canon TS-E lenses via adapter, unfortunately so far I haven't found one that works properly. Two copies of the Techart showed "lens error" (manufacturer couldn't identify the cause), a Viltrox only worked on occasion and otherwise also caused "lens error" (waiting on a replacement for this one at the moment). So any experiences (especially positive ones) would be greatly appreciated.