@Peter
I'm typing this looking at a 28" 4K monitor. I can (just!) detect the difference from my previous 26" 1920x1200 display (or so I tell myself). But (of course) I'm looking at it from 0.5m, rather closer than I normally sit from my telly! So I reckon that with a 56" screen you could probably see a difference with 4K if you sat 1m away. As most of us sit at least 2m from the gogglebox, that would imply a 112" screen, which would rather dwarf most living rooms (and, at current prices, break most bank balances - or, at least, marriages).
Biting the hand that feeds IT
