I think it is rather anoying to manually focus a Sony E-Mount lens. I use the Zeiss 55/1.8 first with AF and then with DMF to get it really sharp. This is more a trial and error loop, than an controlled action, until I get it right. The movement of the focus plane is not proportional to the amount the manual focus ring was turned.
Now, sometimes, if I turn the focus ring it will be sharp right away, which leads me to the conclusion, that the camera might preasume what might be sharp.
Does anybody has a proper method how to focus manually with "Focus by wire" lenses?