I think there is a slightly confusing air around this thread regarding resolution and field of view. I am not saying anyone is wrong here, but I just thought I'd like to clarify some points in this thread;
- The black bars on Halo 3 keeps the aspect ratio and field of view in splitscreen the same as single player.
- The black bars also mean the game is at a lower resolution than single player (854*460 as Kree points out). This helps keep performance running smoothly.
- Thusly, resolution has a major impact on any game's performance, 1280x720 stresses the system noticeably more than 854x460.
- Field of view increases however do not tax systems as much as an increase in resolution will. If Halo 3 ran splitscreen using all the HDTV up, it will slow down due to increased resolution, not increased field of view (would also have fish-eye lens view due to massive field of view distortion, hence the black bars keeping aspect ratio in place).
- Resolution and field of view are not tied to each other.
Please don't yell at me too much, I am only trying to avoid any potential further confusion.