Originally Posted by LCSmith
This was my feeling also. I wonder whether the dealer's hope was that the lens would be used on a non-rf camera and therefore its flaw might go unnoticed.
It might show up less on film. Even with a known good lens, critical focus is hard to achieve on a digital Leica using only the RF.
That said the extent of back focus seems to be rather large. Does it make a sharp image at infinity with focuse set to the hard infinity stop when pointed at a far away landscape? (100ft or more)
: Someone, likely when cleaning the lens, moved the lens elements out of proper adjustment.
: The lenses focus cam is off. It might also be a compounded tolerance issue of the lens being a bit off and your M-P also being a bit off.