Some programming can be upconverted to HD.
AN example, imagine watching an HD news cast, and they show footage of something that happened 10 years ago.
The archived film didn't suddenly become HD quality, it has just been upconverted and sent to you on an HD channel.
Movie channels that are HD, they don't go back and re shoot a movie, nor do they re master it, they are just showing it on an HD channel. You will find you should be able to compare it to a DVD quality.
Live feeds, all dependant on resolution of HD camera gear being used. Many Pro sports use the highest resolution, and best gear, quality is spectacular, Discovery HD and PBS almost always have programming that really shows off HD.
I apologize in advance if this is a rediculous question, but I'm a bit of a HD virgin. I have always been into AV but have put off picking up a HD set until just last week. After doing a lot research here on CNET and other sites I settled on the Sony KDS-R50XBR1 along with a Denon AVR-2807. I have everything fired up, and put it this way....I havent slept in 2 days. This TV is unbelievable!!! My wife refers to the TV as "The other woman".
I have noticed one small issue I was hopping to get some assistance on. When I watch cable (cable provided by Adelphia through a SA 8300HD cable box connected directly to TV via Monster 800 HDMI cable) there are quality differences between HD channels. I have the cable box set up properly to detect the best signal being broadcast and send it to the TV, and know its working correctly because it will display 1080i..720p...etc on the display. I know to expect slight differences between 1080i & 720p broadcasts but there are definately quality issues between 1080i channels. The "INHD" channles both 1 & 2 and the Discovery Channel are absolutly perfect, but when I watch the local sports network (NESN here in New England) broadcast in 1080i as well.....its not even close. Don't get me wrong...its very very good just not up to the quality of INHD or Discovery. Also, when ever there is a "graphic flash" (not sure what to call it but for example when NESN flashes its logo across the screen in between live shots and replays) whether in 1080i or 720p there is severe pixelation that lasts for about 1 second.
Not sure if both issues are something on my cable provider's end of things or if it my equiptment. If its my equiptment...I'm hopping there is some sort of tweek I can perform to fix it. Maybe its because the programing on INHD and Discovery where developed for HD....not sure. Either way I'm still very pleased with my purchase....just trying to be a perfectionist.
Thanks in advance for your tips, sugestions and comments.
(Audio/Video-file in training)