just received here in the UK the 8k ronin combo which comes with the 17-28mm lens! The back focus issue I read occurs because people calibrate the lenss when its not needed!!!! a system reset back to factory defaults will resolve the issue where calibration was applied.
I having issues with my 17-28 I updated firmware and I still can't see information from the lens and I can't figure out how to zoom in or out with it. im trying not to factory reset the camera bc I dont want to re-calibrate my anamorphic lens