See the difference after MA at f1.2
Just got the 5D3 and Canon 85mm f1.2L yesterday. First shots with 85mm were a bit soft I thought, looked like it was front focusing.
Used the instructions here to dial it in visually using the EOS Utility. Tripod mount, 9 feet away, single point focus.
Makes a big difference at f1.2 with such a narrow DOF. Click on image to see 100% crops below (from RAW, unsharpened)
After MA of +7:
It now nails AF as good as LiveView 90% of the time. There is an occasional outlier that is 2 to 3 clicks off, especially if AF was previously at MFD or Infinity.