The problem is that when I zoom in, focus and zoom out, the picture goes just slightly out of focus. I've tried the "hidden menu" for fixing the "flange back adjust". It is closer, but it is not perfect. I did it several times, too. The version number on the camera is 1.20.
Has anyone else had this experience of the "flange back adjust" not working as well as it should, and would sending the camera to a Sony (or other) repair facility fix it? Out of warranty so replacement isn't an option.