It's the difference between the new single magnification (0.52x) and the old dual magnification (0.2x and 0.6x.) Obviously 0.52x gives a larger image than 0.2x, but it also means you can’t use lenses wider than the 23 at all. And 0.52x is smaller than 0.6x, so you're getting a smaller image with 35, 56, and 90 lenses than you did with the old finder. Glorious? Only if the 23 is the only lens you ever use, in which case you might as well buy an x100. What was Fuji thinking? I suspect they were thinking that the OVF is mostly a talking point, and that most users won't care about having it dumbed down because they mostly use the nice new OLED finder.