Thank you for contacting Samsung.
You cannot change the resolution of the TV. It is always 1080p. You can only change the input signal's resolution, so the PS3 is outputting 720p. If the TV receives a 720p signal, it will scale the image up to 1080 (see attachment), like zooming in on a digital camera photo. But, the lower the resolution, the larger it is scaled up and the worse it will look. So, if you receive the 720p signal and then stretch it to fill 1080p, you will lose picture quality and even moreso with 480p.
Thank you for being a Samsung customer!
The Samsung Online Support Team
answered 1 year, 4 months ago
0out of 0found this answer helpful.