Not to take issue, but a Spotmatic/ES era camera is 92% off-center, by manufacturer's specs. and Herbert Keppler, both, as I recall.The problem is that 92% is off center, both directions. I proved it by making tests with a piece of groundglass, making markings with tape pieces on the side of my house at 25 feet. It's pretty bad. You lose everything past the meter opening, and equally bad off top or bottom (I forgot which) There's no way to knock a camera out of whack to do that.