This is data taken form the PS3 post in the BR player section of AVS forums and verified by other calibrators.
These are the setting you uss on your PS3 for watching BR and should work find for gaming. Once you set up the PS3 correctly, you will want to use a calibration disk to set the basic user level controls such as brightness contrast and sharpness.. there is a free disk you can download and burn to standard DVD (only plays in BR player but only requires a standard dvd and burner to create it). This can be found here http://www.avsforum.com/t/948496/avs-hd-709-blu-ray-mp4-calibration/0_60
Video Settings: "BD/DVD Video Output Format(HDMI) - Y Pb/Cb Pr
Display Settings: "RGB Full Range (HDMI) - Limited
"Y Pb/Cb Pr
/Cr Super-White (HDMI) - On
"Deep Color Output (HDMI) - off
same as above
BD Internet: "Allow"
BD/DVD Cinema Conversion: "Automatic"
BD/DVD Upscaler: "Normal"
BD/DVD Video Output Format (HDMI): "Y Pb/Cb Pr
/Cr" for TVs, "RGB" for PC Monitors
BD 1080p 24Hz Output: "Automatic"
BD/DVD Dynamic Range Control: "Off"
BD/DVD Audio Output Format (HDMI): "Linear PCM"
BD/DVD Audio Output Format (Optical Digital): "Bitstream"
RGB Full Range (HDMI): "Limited"
Y Pb/Cb Pr
/Cr Super-White (HDMI): "On"
Audio Output: Varies/Automatic