1080i vs 720p


If one has a 720p projector which can output at 1080i, is it better when using regular dvd source or HDTV to watch in 1080i or use my Faroudja processor and watch in 720p, technically speaking that is.
jcbower
Dusty.

One other note about CNET reviews. I've noticed that lately their reviews are becoming more mainstream; focusing more on features/value and less on performance. I guess you can tell that I'm not a big fan. YMMV

BTW, my home page is news.cnet.com. LOL.
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Elizabeth, correct but don't forget that when shown on a 1080p display, 1080i is displayed at 1080p-- twice the information is actually on the screen compared with 720p.

So as the quality of processing and screen size increases, 1080i should, and often does, look better than 720p. However, in most circumstances, these 2 resolutions look remarkably similar.
OK, here's where I've got to call foul...

"1080p has TWICE the data of either 720p OR 1080i"

1080p and 1080i transmissions have the SAME amount of data (1080 lines). The only difference is that the 1080i is transmitted to the display in 2 groups of 540 lines (even & odd) while the 1080p is transmitted in one pass, top to bottom. The amount of data is the same. It's not like 1080i is repeating the same 540 lines.

In theory, 1080i is better than 720p especially if you are talking about a static picture. The problem arises when motion is thrown in to the equation.