I have been trying to wrap my mind around it, and I think there's a problem using adapted lenses. The scale on an old lens is probably meant for film at the original "Circle of Confusion" size (.03mm). In the old days, I would line up the infinity mark on the lens with the f-stop I have chosen, and I have the maximum (hyperfocal) DoF, right? But with the adapted lens on the NEX, the hyperfocal distance is not the same, because the CoC is different (.03m / 1.5 = .02mm). Taking a real world example: 50mm lens, at f11. For film, the hyperfocal distance is 24.3 feet. For the NEX, it's actually 36.4 feet. So if I'm focused at 24.3 feet, I won't have enough DoF to reach infinity. Similarly, if I am at f8, and I look at the scale on my lens, it tells me I can get a DoF ranging from 5 to 7 feet if I focus at just under 6ft. But that's film. In actuality, on the NEX, I lose about a third of a foot (4 inches) at either end. So trusting the scale on an adapted lens doesn't work! Right?