If by calibration settings you mean the video menu settings and not service menu settings, I've been tweaking mine but here's what I'm currently using...
Picture: Standard
Backlight: 53
Brightness: 50
Contrast: 52
Tint: 2
Color: 48
Sharpness: 0
All advanced settings: off
Color temp: normal
Red: 128
Green: 128
Blue: 128