6D - sensor measurements and comparison with other Canon FF

Thierry Legault wrote:

The 5DII has a higher dynamic range than the 5DIII at low iso because of its lower read noise (dynamic range is directly proportional to read noise). My measurements gave, at 100 iso, 25 electrons for the 5DII and 34 electrons for the 5DIII (34 electrons too for the 1DX).