I have the t4i with 18/135 STM kit. I know there's a firmware update for this issue but I can't say if it works or not. After canon repaired my lens it worked fine. A week later I did the firmware update and it worked same. You should definitely get ...
I took my camera and stm lens to canon's service and repair. It turned out that there wasn't anything wronge with the camera itself but there was something wronge with the lens. Canon stated they made "electrical adjustments" to the lens board and th...
I have a similar problem. I have the t4i with a 18/135 STM lens kit and it stops to autofocus and disables manual focus by itself in movie mode until I hard restart it. Even after a restart, sometimes it works sometimes it doesn't (the first time).
