burkphoto wrote:
The 5DII is ancient history in the electronics world, and the LCD display that presents that readout is probably shot, as a result of age deterioration. You might see if Canon will repair it, or consider a used 5DII that works, or just update your camera to something newer that is compatible with your lenses.
Depending upon what you are photographing, you could also get by with a hand-held light meter...
He said this was in the viewfinder not the LCD.