No, I do not use filters and I haven't even touched the front element area except using the lens front cap.
The problem is in the lens itself. It seems the gearing goes kind of off rail at some point of focusing and then the focusing stops working and the camera gives the error. It works some time possibly and then again, suddenly, during focusing it stops working. I replicated the problem quite succesfully By pointing the lens upwards when focusing. It almost every time locks up there. But even when shooting horizontally this happens. And even if it won't totally lock up, it kinda freezes to wrong focus setting and needs some focusing tries to "wake up".
I contacted Fuji England's repair service and the person answering didn't recognize this problem to be a common problem. They suggested to send it for repair.
I have contacted the seller and probably send it to the seller so that they can send it to repair (or replace the lens, whatever they choose).
So, I end up still trying with the lens whenever I get it back working. Luckily it wasn't my only lens covering that focal lenght :-)
VeijoM got a reaction from yukosteel in XF 27mm error