i think i figured out why i had a lot of image retention with the ninja gaiden health bar and attached emblem while i was playing Uncharted 2 today. While watching one of the first cutscenes that was in a beach setting, i noticed the palm leaves and boards of tables and chairs were overly enhanced to the point of distortion because they had a small surface area and the edge enhancement killed it. in custom mode i had my sharpness set at 75, which THX and a few other users have it set at.
I remember reading about the pixel orbiter and its "wobbling". the wobbling does a lot of good but it cant necessarily smooth out transitional areas of high contrast depending on how thick the object displayed and the number of colors in it (like a big fat lifebar with a border and added intricacies/undulations/contours/ect). when the sharpness is too high it creates aliasing through edge enhancement and (im hoping im right here) makes it near impossible for the orbiter to help out with static objects that get embedded in the static objects when they become distorted. i hope that sounds right/makes sense. when things are too sharp (non transparent hud objects) i suppose they cant be smoothed/wobbled that well.
anyway ive seen quite a few pq settings with the sharpness set at zero. it doesnt make the picture blurry (not like a crt there the sharpness is almost always in the middle/has to be used) when its set low/off. i ended up playing 5 hours of uncharted 2 today and it still looked great - and no retention on the blank, black field - save for that little clock symbol at the top right on the ps3 dash. and that not even for a whole screen wipe. not that there is a lot of HUD going on in Uncharted 2 but i was completely expecting to see a little pistol and ammo count in the top left of my tv when i was done.
its late and i have yet to try ninja gaiden again yet, but from staring at the dragon emblem on the life bar and seeing how obscenely defined it was on my screen hours after the fact, im heavily betting it was because the sharpness was too high and generated extra contours that were too enhanced to be smoothed by the orbiter.
ill set the sharpness low for games. i like it on movies...maybe not so high though as by default. when i turned up the sharpness on the game before i stopped, it look too edgy. im sure there is a little leeway from 30 to 0 but its barely imperceptible to my eyes.
On another note im pretty sure game mode turns off the orbiter to speed up the screen. if the orbiter could go any faster than a forced 1 minute orbit im sure they'd let you select it. game mode speeds up the screen by like 10ms or something ive heard. so it probably disables any kind of screen enhancements whatsoever. if the orbiter went faster for game mode im pretty sure you have a jittery-ass picture when youre trying to play game X that requires twitch reflexes.
anyway ill try ninja gaiden tomorrow and let you know if im right.
anyway heres a pic of the screenshot so you can see what im talking about with the lifebar/emblem...lot of stuff going on there that can get too edged-out.http://img.gamespot.com/gamespot/ima..._screen001.jpg
hope that makes sense