Although the pictures on my HDTV are really good, especially compared to analog, they can be compressed up to almost 68 to 1. Since most broadcasters are sending up to 3 channels in their allotted bandwidth, picture quality has to take a hit. I’ve been wondering what an uncompressed picture would look like!
Further info on this subject.
http://broadcastengineering.com/digital_handbook/broadcasting_hdtv_data_multiplexing_5/
As opposed to a typical DVD movie, which is compressed about 10 to 1.