720p vs 1080i

I agree with Wendell. If you could tell a difference, you would have to be pretty close to the set. Closer than you would probably watch at.

Well you made me check the difference by comparing the cable feed for 720p v 1080i. 720p won on my 50" 1080p plasma for the NBA game I was watching at the time -- the colors seemed more vivid.

Have you compared the two?

I have a friend who is a certified ISF technician and has calibrated 1000's of televisions. I stand by his advise. At 50" or less there is no difference to the human eye between 720 and 1080. Larger than that and the difference MAY be apparent, or not depending on your distance from the screen.

If you have to choose I would send 1080i over 720p, there may be times it may be noticable, tho I agree on smaller sets its harder to discern.

With DirectTV-HD satellite I get HD channels in 1080i and the others in what I think is 720p, and there is no comparison. I will now only watch HD channels.. but I am using 60" Elite plasma.

BTW Tgrisham would your friend recommend calibrating the 151 elite plasma?

Your eyes and display should tell you what's best.

Interlaced vs progressive are two different animals entirely. The refresh rate also plays a big part in interlaced... more so than with progressive (480P, 720P, 1080P). Distance too will overcome minor annoyances, or artifacts.

The channel you are watching is going to make the decision for you usually. Although I've got my box set to 720p, there are those stations which don't send out 720p info, and use 1080i instead, and vice versa... also some are still 4:3, not 16:9.

Upsampling one format to a higher resolution simply doesn't always make the image better... as you are telling the device to fill in missing info by 'guessing'.

Sometimes the image is degraded with artifacts, and not improved at all. Much of the time it is just made to look smoother on static images, and revelas it's true self ojn fasxt moving scenes. the display, technology employed, and components are all responsible for overcoming such errors when upsampling video images.

Progressive images should provide more vibrant colors, and an easier to view image... and I do mean 'should'.