Thanks for that, Ross. Yes it is the earlier EM 1. I’m already on 4.6.
I haven’t used keystone comp before and wasn’t aware that this was an acknowledged problem, so it’s a relief to know. Looking back, the problems do seem to have started when I turned on keystone in the main menu and allocated a function button.
Everything seems back to normal with it turned off in the main menu. I just won’t worry about it. I can turn it on for specific shots or make any corrections in PP.
thanks again