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Why does an 1080p signal look better than 720p on a 720p TV?

Shuriko
03-20-2010, 08:51 AM
If 720p is the max then it shouldn't matter if you go higher than that, but there's a significant improvement in color quality when I set the signal to 1080.

Why?

Scottnot
03-20-2010, 09:23 AM
If 720p is the max then it shouldn't matter if you go higher than that, but there's a significant improvement in color quality when I set the signal to 1080.
Not sure what you mean by "set the signal"???

Rick-F
03-20-2010, 09:31 AM
Do you have a true 720p DLP? Or is it an LCD or PDP-- if it is, it's probably not a 720 but a 768 X 1366-- and many of those do indeed look better getting a 1080 signal than a 720 signal.

Bigloww
03-20-2010, 09:31 AM
Not sue of your TV, but many 720p TV's have a native resolution of 1366x768 and 720p is 1280x720. If your TV is 768p, it is usually better to have your TV downconvert the signal than upconvert. But I don't see a significant improvement in any case, but a slight 1. So don't think this is the case for you with color and such.

PFC5
03-20-2010, 10:41 AM
Not sue of your TV, but many 720p TV's have a native resolution of 1366x768 and 720p is 1280x720. If your TV is 768p, it is usually better to have your TV downconvert the signal than upconvert. But I don't see a significant improvement in any case, but a slight 1. So don't think this is the case for you with color and such.

This is true. Displays usually do better when they throw away pixels by downscaling than when they have to GUESS at what pixels to add that are not in the source material fed to the display.

Another possible reason colors look better when the OP sends 1080p to the 720p class TV is because that particular TV model might handle the HD color space better on 1080p signals. That would be something that is TV model based and not necessarily true for all 720p "class" displays.

Scottnot
03-20-2010, 10:44 AM
Another possiblity - he could be switching from uncalibrated HDMI to uncalibrated Component when he "sets the signal".

We won't know what the issue really is until he posts again.

PFC5
03-20-2010, 10:50 AM
Very true Scott!

We do not have enough info to full answer and can only provide the various possibilities as to why. Most people do not know that each input has it's own picture settings memory and they must adjust the picture for each input.