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Also, if your displayed content has gone thru any digital generations -- current broadcast, DVD authoring, etc. -- it's likely that black level is now zero, rather than 7.5... I don't know if DTV --> analog off-air conversion boxes do this or not, but most pro signal chains do, now that we're "done with transition". Folks might be more aggressive with legal color levels, too... but this shouldn't influence Joe Friday and the Twilight Zone. (the old Twilight, that is...)
Chip
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