I sit approx 9-10ft away from my set, a 63" Samsung.
to be honest the SD broadcasts (that's Sub-Definition btw) on a lot of channels are atrocious, often worse than an internet youtube download... and this is surely wrong?!
I think a lot of channels are skimping on bandwidth with not only vicious compression but also far lower than standard definition resolution. Some channels look so ridiculously "soft" that they must be broadcast at 384x288 or lower!
With decent compression and full 768x576 resolution, standard definition can actually look quite acceptable even on a screen of 60+ inches.
There is no doubt that the quality of TV broadcasting has and continues to deteriorate. We seem to have reached and passed the pinnacle of TV broadcasting standards as in previous years the drive was to continually find ways to improve quality and give viewers a better viewing experience. Now, it seems the drive is to see how crap they can make it and still get away with it! I really wish the drive would focus on quality and the viewing experience again. STOP trying to squeeze another God channel+1 into the existing bandwidth - just invest in providing more bandwidth for flips sake
I would take fewer channels ANY DAY for better quality, I think most would agree.
High Definition can (obviously) look fantastic, but the likes of BBC and ITV already think the drive should be to get away with giving us less. BBC HD (that's "Higher Definition" btw) has a horizontal resolution of 1440 pixels (of course scaled to fit the screen) and ITV HD ("Huh definition") is 960 horizontal pixels, literally half the definition your TV is able to resolve. Because it is "slightly better" than the SD equivalent channels they think no one will notice, partly because it is easier to detect fewer lines (vertical pixels) in the image than fewer horizontal pixels. So they get away with it.
I seem to have digressed - but anyway at the end of the day I just put up with the crappier channels safe in the knowledge the shight image is due to the broadcaster and not my setup.