I bought a T3i a little over a year ago for a backup and only used it once. I was doing some recording recently and noticed that there is a back focus problem with the body. If I zoom in all the way with an 18-135mm in video mode and focus, then zoom wide, my focus object is totally out of focus. I know it's a body issue and not the lens as I have tested the lens on a 70D and it's fine. I reset the camera with the same problem. Did any of you encounter this issue, does anyone know of a solution? Thanks
