I see your point. Does everyone else change the display settings when changing one disc to another? I am personally not that anal about it. It seems as far as ps3 games go, the settings i have for MGS4, and the settings for Tomb Raider: Underworld, LBP, Socom etc. all look the best to me at the same settings. Same goes for my xbox360 set-up. So i don't tailor the t.v./system settings for Each individual game. I will be honest, i'm way too lazy to go through that.
Do you guys find youself adjusting the t.v./system settings when playing differnet games? I do not, since when setting the t.v. up i usually sample a few games and the one setting works best for them. In the end it's not a big deal. If others are custom tailoring their t.v./systems to specific games then i can definatley see why the opinion of it differs.

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Frankly you are taking this to the extreme. I never suggested that you are anyone else should recalibrate their display settings for each and every different game, movie, TV show... that would in deed be quite extreme.
However, if someone is complaining because an image looks to dark, or to bright, or the color is "off", then they should at least try and fix it with even just the easy basic display settings on their TV instead of just complaining about it, or worse yet, make posts to imply the problem is that the game, movie, or TV show looks bad.
In some ways it reminds me of a stereotype couch potato who can't find his remote and instead of getting up and manually changing the channels, they'll watch a show they don't even like and then bitch about it.
If graphics and video quality are important to you, then yes, you need to take the time to properly calibrate each video input
(composite, S-Video, component, SCART, VGA, DVI, HDMI, etc) and more importantly, each source
(antennae, cable box, satellite receiver, DVR, DVD player, Blu-ray player, console, etc). And as said before, even then, there sill often be differences in specific content (games, movies, TV shows, etc) that to see them at their best, one would have to at least take a few seconds to fine tune their picture settings... and if not... then at least they shouldn't be complaining about it.
That said, there are times where it is important to me, and thus I will calibrate the settings, and there are times I could care less... and I don't.