PS3 upscaling PS2 games, quality issues?

[Escape-To-88]

Hi all,
Just a quick question really. Only owned a bc u.s Ps3 for a month or two and have been running a few PS2 titles on it. Noticed that whenever and hd modes are set 720p/1080i the upscaled image of the ps2 game is a little blurry and not that amazing, however when set to 480p the image is very crisp and fantastic.
Wondered if there is anyway I can get a good picture leaving the console set in the higher def modes or if I have to switch in the menu everytime I want to play a PS2 title with a good picture?
Cheers

[Strolls]

I think you'll have to continue doing it the way you are now - when you set the PS3's output to 480p it's your telly that's doing the upscaling. If that's good then it's your telly's upscaler that's responsible.