When firing up my FS-5 with the sony 18-110 kit lens the camera zooms in by itself. When I use the rocker to zoom out it again zooms in by itself. Any insight would be greatly appreciated!
Possible broken wire in the controller... I had the exact same issue with a Fuji lens years ago. I had sent it in for service and when it came back it would zoom in as soon as the camera was powered up. Turns out that when they re-assembled the grip, they accidentally pinched one of the wires and broke it. Simple fix, but very inconvenient for me.