Mark Schubin wrote: > Consider this. Which has more resolution? A 440-line NTSC broadcast or > an 852-pixel-wide plasma panel? Due to the pixel-shift phenomenon, the > 852-pixel display can only display half as many TV lines of resolution > as pixels with a guarantee that they will be actually black and white. > That's 426, slightly less than broadcast NTSC resolution. > > I think that's what John Watkinson was driving at. > Your 440 line NTSC "broadcast" has a different but equally severe problem: if it really did have a full 100% flat baddpass out to some cutoff, it would have a "boxcar" apodization, and in the electrical domain a pure sin(t) impulse response (assuming it is phase corrected somewhow). It would have horrendous ringing, and in fact nonlinearities because in the light domain things are not linear, and less than zero light does not exist. My point ... which is clear if you watch Fox enough on a true 720p display ... is that true 720p produced material clearly IS better than even the best 480 material converted to 720p by Fox using really really good conversion equipment. The original quoted material is wrong abot 480 being "just fine" on a 720 display. In fact it is inferior, if still quite nice. Has the original quoted person actually looked a lot at such real stuff? I am implying real stuff here, including Monday Night Football and the best Fox Sunday football, as well as the Fox upconverts. Doug McDonald ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.