Well I don't know about the technical of getting the best out of GT5, but I do agree that it isn't looking the best it can, not because of the graphical work that is done.
But because of the Rendering, there is annoying things going on in the View, On EX: Suzuka and Fuji! fences and well the middle part of the screen is often shimmering in the small details, and if you look to the Road textures when watching a replay ( in front of the car), you'll see lots of artifacts, :| and another clear error, is the rendering of dust, when the Camera gets it over grass and other veggies, ( You can see the rendering method used ( funny patterns) On some places like in daytona, you'll actually see some Graphical work spots that hasn't been executed very decent and surely with out the normal PD passion ( All matters, and all is equally important too gain the best results)
GT5 is the game that come nearest to the idea of a real Sim world view, But again the limitation or the lack of knowledge on where the limitation is on the PS3, they have balanced the game, and been taking some choices on which is the most important High Quality stuff and which is the low Q, and then executed it after that scale, I almost agree in all there choices but only almost he he.
Shadows is like the spirit in the landscapes and on living things it makes it more real, but EX: Eigar Nordwand No Shadows on spectators ( argh that hurts my eyes ) but on the GT-HD version of EN they had shadows on beautifully shadows (balanced off) ?
Anyways. Gt5 is tha Bomb, it's fantastic and PD also know that, so smaller details will get fixed on the way, Or not!
Well same goes for the whole developing of GT5, I almost agree
I hope for Multiply Monitor setups on the PS3, and with GT5 supporting it, But first after they have fixed the View in general, they could also work on a rendering filter, that can make a scrambled view, like the view most people are watching motor-sports through and It's actually (Broadcast quality) If Gt5's amazing beautifully clear Picture is like DivX'ed, it would probably look even more real in the view ( You must agree that some environment smock, mist ( peoples waste) could help in some of the tracks.
Dream Extreme
Flagmo-T