Laserman is right as far as the analog vs digital IRE thing is concerned. What it really means is that if the laserdisc outputs black as 7.5 IRE, whatever voltage that refers to (i almost wanna say 7mv) and you want the DVD to output black as 7.5 IRE (I do, because thats how it was mastered) then the black in the DVD must have a digital luminance of 16. As i've already explained ad nauseum, I "can" adjust it, but then George Lucas "can" make Greedo shoot first. If the goal is preserving the definitive collection LDs, thats just how I gotta do it and people will just have to adjust the brightness on their TV.