I already made some visual hacks for Fatal Frame 3 (NTSC-U). It's in the widescreen code.
//Dither + Ghost post-process Effect Off
//patch=1,EE,00156cb4,word,00000000
//Focus Effect Off
patch=1,EE,00156cfc,word,00000000
//Disable dark filter (cutscene)
//patch=1,EE,00156d2c,word,00000000
//Disable all bloom (speedup, but makes the game seem dull)
//patch=1,EE,00156df4,word,00000000
//Disable overbloom (cutscene)
patch=1,EE,00156d90,word,00000000
//Decrease overbloom (gameplay)
patch=1,EE,2036B904,word,3F400000
//Bloom offset (fixes bloom glitch)
patch=1,EE,2036B910,word,43A30000 // 43A00000 - TC X-offset
patch=1,EE,2036B914,word,43660000 // 43600000 - TC Y-offset
Try running the game with widescreen hacks and see if it makes a difference.
If you want to go further, you can disable "Dither + Ghost post-process Effect Off" which turns off the noise filter, however, it also disables a creepy filter when ghosts are nearby, and I like the creepy filter so I prefer to leave it on. The noise filter isn't too bad in this game anyway.
The "disable dark filter (cutscene)" just brightens cutscenes a little, it's kinda useless and unimportant.
The "Disable all bloom" does what it says, but I think it makes the game seem way too dull and boring.
I think the surreal bloom helps add to the dream-like atmosphere of the game. If you're having FPS issues with the game, however, turning it off will give you a nice FPS boost.
//Dither + Ghost post-process Effect Off
//patch=1,EE,00156cb4,word,00000000
//Focus Effect Off
patch=1,EE,00156cfc,word,00000000
//Disable dark filter (cutscene)
//patch=1,EE,00156d2c,word,00000000
//Disable all bloom (speedup, but makes the game seem dull)
//patch=1,EE,00156df4,word,00000000
//Disable overbloom (cutscene)
patch=1,EE,00156d90,word,00000000
//Decrease overbloom (gameplay)
patch=1,EE,2036B904,word,3F400000
//Bloom offset (fixes bloom glitch)
patch=1,EE,2036B910,word,43A30000 // 43A00000 - TC X-offset
patch=1,EE,2036B914,word,43660000 // 43600000 - TC Y-offset
Try running the game with widescreen hacks and see if it makes a difference.
If you want to go further, you can disable "Dither + Ghost post-process Effect Off" which turns off the noise filter, however, it also disables a creepy filter when ghosts are nearby, and I like the creepy filter so I prefer to leave it on. The noise filter isn't too bad in this game anyway.
The "disable dark filter (cutscene)" just brightens cutscenes a little, it's kinda useless and unimportant.
The "Disable all bloom" does what it says, but I think it makes the game seem way too dull and boring.
I think the surreal bloom helps add to the dream-like atmosphere of the game. If you're having FPS issues with the game, however, turning it off will give you a nice FPS boost.