My XF400 image was damaged after pressing the infrared button ON and OFF switch. It's now permanently purple, if i press the button once again it looks as if the filter was out of place. It doesn't go back to normal (I had never pressed the infrared ...
There is nothing you can do except send the camera to Canon - they will charge you around 950 dollars to fix it. They told me they have to change the sensor or something like that. I gave up on the camera and switched to Sony.