BK, what you said is almost exactly what I said, though one thing you said confuses me, perhaps I simply am misunderstanding. I routinely take 1:1 screencaps in discs encoded at 1.85:1 which are overscanned to 1.78:1 when seen on a 16x9 HDTV. There is not more image, there is slightly less in the 1.78:1 "as seen on tv" version. While you're correct to say a disc mastered at 1.78:1 from a 1.85:1 source would have slightly more image, overscanned 1.85:1 transfers are missing just a sliver of their image, which is demonstrable just by looking at 1.85:1 screencaps vs. the 1.78:1 overscans.