I did read that it can be eyesight dependent - I for one have very good eyesight - I'm 31 and any time I've had an eye test I can always read the charts to the very bottom with no mistakes.
I also think that HD TV is night and day over SD TV, same for Blu Ray over DVD.
However my dad, who's 65, can see no (or very little) difference between HD TV over SD, even on a 42" screen. And his eyesight is by no means "bad", he wears glasses for reading but not for TV or driving, etc.
I also think that HD TV is night and day over SD TV, same for Blu Ray over DVD.
However my dad, who's 65, can see no (or very little) difference between HD TV over SD, even on a 42" screen. And his eyesight is by no means "bad", he wears glasses for reading but not for TV or driving, etc.